No by-elections since 2019 in Herts, so here's a run down of the results last time.

Broxbourne: Sir Charles Walker* (CON HOLD by 19,807 votes)

Hemel Hempstead: Sir Mike Penning* (CON HOLD by 14,563)

Hertford and Stortford: Julie Marson (CON HOLD by 19,620)

Hertsmere: Oliver Dowden (CON HOLD by 21,313)

Hitchin and Harpenden: Bim Afolami (CON HOLD by 6,895) - in 2024 seat has been redrawn and is now called Hitchin.

North East Herts: Sir Oliver Heald* (CON HOLD by 18,189)

St Albans: Daisy Cooper (LIB DEM GAIN by 6,293)

South West Herts: Gagan Mohindra (CON HOLD by 14,408)

Stevenage: Stephen McPartland* (CON HOLD by 8,562)

Watford: Dean Russell (CON HOLD by 4,433)

Welwyn Hatfield: Grant Shapps (CON HOLD by 10,955)

Harpenden and Berkhamsted: New seat formed because of recent boundary changes

*denotes MP's not standing in 2024

Amy Holmes
Political reporter, BBC Three Counties

Since the last General Election, Bedfordshire has seen a by-election in 2023, for the Mid Beds constituency. Last October Alistair Strathern became the first Labour MP in that seat, overturning a 24,664 majority that Conservative Nadine Dorries had won in 2019.

Here's what else happened in the county in 2019:

Bedford: Mohammad Yasin (Labour HOLD by 145 votes)

South West Beds: Andrew Selous (CON HOLD by 18,583) - in 2024 seat has been redrawn and is now called Dunstable and Leighton Buzzard.

Luton North: Sarah Owen (LAB HOLD by 9,247)

Luton South: Rachel Hopkins (LAB HOLD by 8,756) - in 2024 seat has been redrawn and is now called Luton South and South Beds.

North East Beds: Richard Fuller (CON HOLD by 24,283) - in 2024 seat has been redrawn and is now called North Beds.

Amy Holmes
Political reporter, BBC Three Counties

On a big night for Labour, Bedfordshire could well see the least change in Bedfordshire, Hertfordshire and Buckinghamshire as the party already has four of the MPs in the county.

A lot of the focus will be on Mid Beds and Bedford.

Historically Mid Beds has been a strong Conservative seat, but Labour won last October's by-election while the Liberal Democrats also but on a decent performance.

Bedford is often a bellwether seat, with Labour's Mohammad Yasin winning narrowly in 2017 and 2019 (just 145 votes last time) but since then the Borough’s elected a Conservative Mayor.

You would expect Labour to hold on to Luton North and Luton South and South Beds, unless the Workers Party has a larger than expected impact on the town's Muslim community.

Dunstable and Leighton Buzzard was Conservative under its previous name of South West Bedfordshire and if Andrew Selous loses it would bring to a halt a parliamentary career that began in 2001.

The final seat is North Bedfordshire, where Richard Fuller has a huge majority of 24,283. Even people I spoke to who wanted change there, weren't expecting it to happen.

The BBC has been asking what really matters to you in this general election.

As part of Your Voice, Your Vote we wanted to know about the one issue that would influence your vote - and we put your concerns to the candidates and the parties in your constituency.

Here are just a couple of the questions you have asked us about - and your potential parties or MPs have answered:

Image source, Richard Knights/BBC

Mum Jayne Wood, from Welwyn Garden City put her own career plans on hold and says she is now in debt caring for her grown-up son with Down's syndrome - she wants to know why there isn't more support for parents and feels she is "stuck in a system that doesn't work".

Amy Holmes
Political reporter, BBC Three Counties

Whatever happens, Herts is guaranteed four new MPs, as four Tories have stood down and are not contesting the seats they won in 2019.

One of those is Stephen McPartland in Stevenage, which is on a list of seats including Watford and Hemel Hempstead where Labour have a strong chance of winning.

Hitchin is worth watching as boundary changes mean Labour's Alistair Strathern (incumbent MP for Mid Beds) stands against the current Conservative MP Bim Afolami, meaning at least one MP will lose (don't rule out Lib Dem Chris Lucas either).

Also worth watching is Harpenden and Berkhamsted - a new seat not on Labour's main target list, but widely expected to be too close to call between the Tories and the Lib Dems, who will expect to hold on to St Albans, which is deputy leader Daisy Cooper’s seat.

Every election night sees big names fall, and there's some suggestion Defence Secretary Grant Shapps could be one of those in Welwyn Hatfield.

That leaves five seats with five-figure Conservative majorities - if they lose any of those (the Deputy Prime Minister Oliver Dowden is defending Hertsmere), then that would give us another idea of just how bad this night is for the party.

During the election campaign the BBC has been asking you what really matters to you in this election.

Some issues, including the cost of living crisis, the education policy and immigration, were put to the politicians standing in the Mid Bedfordshire constituency.

You can find the full debate condensed into seven key takeaways here and, on a lighter note, the candidates' favourite places to visit in the constituency.

A list of those standing in Mid Bedfordshire can be found here.

Holly Nichols
BBC News, Hertfordshire

Image source, Holly Nichols/BBC

Michael is a volunteer for the Conservative Party where I am at North Herts College for the two counts covering Hitchin and North East Hertfordshire.

He has been checking the verification process and making notes and from what he has seen, he says it looks like Reform UK are "doing very well".

He added: "Conservatives and Labour are probably neck and neck with Labour slightly ahead possibly, and hardly anything for the Liberals, which is quite surprising."

Barnie Choudhury

Mark Versallion, the Conservative candidate for the Luton South & South Bedfordshire constituency said it was "understandable" that his party was expected to lose many seats, but said he was "concerned for the local community in Luton and the villages around South Bedfordshire".

He said he was a "realist" though.

"It's a moment now that we need to reflect on - how we conduct our political discussions," he said.

Amy Holmes
Political reporter, BBC Three Counties

Buckinghamshire can claim, for better or worse, to be the county of development since the 2019 general election.

Market towns like Aylesbury have seen large numbers of homes being built on an area still waiting for its road network to catch up, despite signs that's changing.

Two major rail projects have also become a more prominent part of the countryside.

The Chiltern Area of Outstand Natural Beauty (running from Chesham and Amersham to Wendover and on to Aylesbury) now has a 10-mile tunnel through the middle which will one day have have the HS2 line running through it.

Elsewhere, in Winslow and Bletchley there's growing evidence of the East West Rail project, with a new station due to open in Winslow next year.

However the problems caused by austerity aren't far away either, with Milton Keynes Council declaring a cost of living emergency in 2022.

Image source, Holly Nichols/BBC

All the ballot boxes are in and verified at North Hertfordshire College for the Hitchin count - a constituency that includes parts of Bedfordshire.

It is being contested by Labour's Alistair Strathern, who won the Mid Bedfordshire seat in October in a by-election in what was Nadine Dorries's seat.

All the volunteer counters have also been waiting for the rest of the postal ballots to arrive so they can be verified.

Amy Holmes
Political reporter, BBC Three Counties

If Buckinghamshire’s beginning to see the benefits of the East West Rail project, people in Bedfordshire are still living with the threat of some homes being demolished to accommodate its route through Bedford Borough.

The county is however also hoping for a major boost to its economy if it ends up being the home of a new theme park for Universal Studios.

Luton meanwhile has seen its fair share of development since the last election, with the airport DART link almost 18 months old and hope that the town’s relegated football team will have a new stadium open for business by the 2027-28 season.

Talking of the airport, across the county and into neighbouring parts of Hertfordshire that are on its flight path, people are still waiting to hear just how large the expansion plans are going to be, with the ultimate aim for 32 million passengers a year.

Sam Read
BBC Look East

Image source, Sam Read/BBC

The Conservative candidate for Milton Keynes Central, Johnny Luk, tells me the exit poll predicting a Labour landslide is “heartbreaking” and “devastating” for his party.

But he says it is not necessarily reflected in the new seat, which he maintains is “very, very close”.

He did admit if the exit poll was reflected here he would be “wiped out”.

We will see if his cautious optimism is warranted in a few hours.

Image source, Khadijah Hasan/BBC

Luton Council said that there were 103 polling stations covering the two constituencies of Luton North and Luton South & South Bedfordshire.

The first boxes arrived at 22:15 into the sports hall at the Inspire Sports Village in the town.

At the stroke of 10:00, when polls closed, counting officers began to verify the postal ballots which had been sent in earlier.

Amy Holmes
Political reporter, BBC Three Counties

Our first result is expected in the next hour or so, in one of the safest Conservative seats since it was set up in 1983.

It will get a new MP as Sir Charles Walker is retiring after 19 years, with Broxbourne council leader Lewis Cocking hoping to replace him.

However the exit polls suggest that it could be another seat that goes red tonight - we should find out in the next hour or so.

Image source, Holly Nichols/BBC

The Liberal Democrat candidate for North East Hertfordshire, Ruth Brown, has told BBC Three Counties Radio presenter Roberto Perrone that if the exit polls predicting a Labour landslide were accurate it would be "a good result for us".

When asked about what people have been saying on the doorstep, she said she believed people wanted change but due to the way the electoral system worked, many people felt "Labour is the main alternative to the Conservatives in most places".

She added: "But I think that there are places, and that is where we will win votes, where the Liberal Democrats are the clear challenger to the Conservatives."

The count for South West Hertfordshire is taking place at the Watersmeet theatre in Rickmansworth.

The ballot boxes have arrived backstage.

Take a bow everyone.

Image source, Daisie-Belle Downer/BBC

We've had Hertfordshire royalty address the troops to keep us all going here at Welwyn!

Annie Brewster, the High Sheriff of Hertfordshire certainly dressed for the occasion.

Image source, Peter Short/BBC

Amy Holmes
Political reporter, BBC Three Counties

Two items should be on the to-do list for the 12 MPs elected in Hertfordshire.

Sorting out the rivers is one - some believe the county is home to the worst rivers in the country with many of its famous chalk screens now blighted by sewage.

And then there’s its Special Educational Needs service, which made the headlines last November when Ofsted and the Care Quality Commission gave it the lowest possible rating.

On top of that, parts of Hertfordshire are on the flight path of nearby Luton Airport – historically MPs in the area have opposed its expansion plans, so it will be interesting to see if the new intake has a different approach.

In our recent election debate featuring the new Hertfordshire constituency of Harpenden & Berkhamsted, housing and waiting times for GP appointments and getting dental treatment on the NHS were also seen as key issues.

Amy Holmes
Political reporter, BBC Three Counties

Historically the Broxbourne constituency loves to be first in the Three Counties when it comes to sharing its result, so we'd expect that to happen again. These times come with the health warning that they're estimates and may well depend on whether recounts are needed or not - plus with two new seats and others being redrawn, there's not as much historical data to help with these estimates.

Broxbourne (12:15)

Hertsmere (02:45)

Dunstable & Leighton Buzzard (02:45)

Mid Bedfordshire (02:45)

Luton South & South Beds (03:00)

Stevenage (03:00)

Watford (03:00)

Luton North (03:30)

Bedford (03:30)

Welwyn Hatfield (03:30)

Aylesbury (04:00)

Mid Buckinghamshire (04:00)

North Bedfordshire (04:00)

Harpenden & Berkhamsted (04:00)

Hertford & Stortford (04:00)

Milton Keynes North (04:30)

Milton Keynes Central (04:30)

Buckingham & Bletchley (05:00)

St Albans (05:00)

Hemel Hempstead (05:00)

Hitchin (0500)

North East Herts (05:00)

South West Herts (05:00)

Wycombe (06:00)

Chesham & Amersham (06:00)

Beaconsfield (06:00)

Amy Holmes
Political reporter, BBC Three Counties

Milton Keynes hasn't had a Labour MP since 2010, but it would be a surprise if that doesn't change in some, if not all of the three seats around the city, Milton Keynes North, Milton Keynes Central and the new Buckingham and Bletchley constituency.

Wycombe has had a Conservative MP since 1951, but the feeling is that former Brexit Minister Steve Baker's position is under threat from Labour's Emma Reynolds.

The Liberal Democrats won the Tory stronghold of Chesham & Amersham in the 2021 by-election, but it will be interesting to whether a larger turn out (it was 52% in 2021, but historically it has been closer to 80%) turns it blue again.

Aylesbury has been Conservative since 1929, but people within the party locally tell me that they're "very worried" that the seat is one they could lose this evening.

That leaves Beaconsfield (Conservative majority 15,712) and Mid Bucks (formerly Buckingham where the Conservatives had a majority of 20,411).

It would take a brave political reporter to suggest those will change, but this feels like a night where anything could happen.