Democratic Sen Elizabeth Warren has been re-elected in Massachusetts, CBS projection shows, defeating Republican Geoff Diehl.

Analysts say the progressive senator is considering a presidential run in 2020.

Warren faced a backlash last month after revealing a DNA test which she said validated her claims of Native American heritage.

Our CBS partners are projecting six Democrats will hold their Senate seats in addition to Independent Senator Bernie Sanders in Vermont.

Here are the CBS projections so far:

Connecticut Senate race - Democrat Chris Murphy

Delaware Senate race - Democrat Tom Carper

Maryland Senate race - Democrat Ben Cardin

Massachusetts Senate race - Democrat Elizabeth Warren

Pennsylvania Senate race - Democrat Bob Casey

Rhode Island Senate race - Democrat Sheldon Whitehouse

Ohio Senate race - Democrat Sherrod Brown

The Democrats have held Delaware, Virginia, Maryland, Rhode Island, Connecticut and Massachusetts.

Image source, .

Image source, Getty Images

Kim Davis, the Kentucky court clerk who made national headlines after she refused to issue marriage licences to gay couples, has lost her re-election bid, according to the Lexington Herald-Leader.

The controversy landed the clerk in jail for five days in 2015 over her faith-based refusal, but also gained her attention from influential Christian conservatives.

According to the newspaper, she lost to Democratic challenger Elwood Caudill Jr by about 700 votes in the rural Rowan County district.

Democrat Jennifer Wexton is projected to unseat Republican Barbara Comstock in Northern Virginia's 10th district.

It appears that this is the first seat to flip to the Democrats in the House of Representatives, according to US media.

It's a big win: the region has been under Republican control for nearly 40 years. Comstock was seeking a third term in the House.

It's 20:00 EST (01:00 GMT) and polls are now closed in most of Texas - one of the key states to watch this year with Beto O'Rourke vs Ted Cruz - as well as Alabama, Connecticut, Delaware, Illinois, Maine, Maryland, Massachusetts, Mississippi, Missouri, New Jersey, Oklahoma, Pennsylvania, Rhode Island and Tennessee.

Polling places in parts of Florida, Kansas, Michigan, New Hampshire, North Dakota and South Dakota are also closed.

Image source, Getty Images

A rising star in the Democratic Party could pull off an unlikely victory tonight if he unseats a big-name Republican - Ted Cruz - in the traditionally conservative state of Texas.

Robert Francis "Beto" O'Rourke is bouncing on a small stage in Edinburg, waving his arms wildly, all 6ft 4ins of his gangly frame crackling with energy.

"Everyone is welcome," he smiles to the packed audience, insisting that the invitation even extends to "the dude in the Make America Great Again cap".

Read more about the politician known as Beto from our correspondent James Cook

Beto O'Rourke: Democrats dazzled by rising star in Texas

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First-time voter Sabaa Tahir, author of the Ember in the Ashes series, encouraged her fellow citizens: "Don't take your right to vote for granted."

In the 2016 presidential election, 10.8 million naturalised US citizens voted, according to the Pew Research Center, external.

A man who spent 30 years on death row in Alabama before being exonerated has exercised his right to vote, according to the Equal Rights Initiative which helped him gain his freedom.

After he was released from jail in 2015, Anthony Ray Hinton told the BBC that the murder case against him was "built around racism and a lie".

Watch the emotional moment Hinton emerged from jail to hug family members and say: "Thank you, Jesus".

Virginia is considered a swing state, but current voting history could show it shifting to a Democratic stronghold.

In the 1990s and early 2000s, both Republicans and Democrats were elected to the governorship - but since 2009 only Democrats have won the seat.

In the Senate, Virginia also has elected two Democrats, and one - Hillary Clinton's runningmate Tim Kaine - is likely to win his re-election this year.

According to initial exit poll reports from CBS News, Trump remains popular in West Virginia - a state which went easily to him in 2016.

Joe Manchin is one of the vulnerable Democrats of this year's mid-terms and so far, data suggests voters are leaning towards his Republican opponent Patrick Morrisey.

That could be because 63% of voters polled by CBS say they came out to support Trump rather than condemn him.

Manchin's platform - like many Democrats this season - has focused on healthcare, as his state remains one of the unhealthiest in the nation.

And he is still getting nearly one in five votes even among Trump supporters which is better than other Democrats in other states.

Politicians both blue and red are reminding voters that if they are in line to vote, polling stations will not close until they have gotten an opportunity to cast their ballot.

Republican Marco Rubio in Florida warned voters that late-breaking turnout of Democrats will make the elections there "very close".

Democrat Hillary Clinton told Georgia voters - who have been braving long lines and technical difficulties - to stay in line to "bring this home" for Democrat Stacey Abrams.

Image source, Reuters

A worker at Ted Cruz's victory party has been seen ironing the massive Texas flag that the incumbent Republican will stand before after results come in.

Cruz is running against Democrat Beto O'Rourke in a much-watched closely divided campaign.

Meghan McCain, daughter of the late Senator John McCain, shared a photo of her father on election night.

The Vietnam veteran and six-term senator died in August at the age of 81.

Read more about the Republican maverick here.

And here's why:

• Stacey Abrams could become the first African American female governor of Georgia. She's been drawing support from locals and celebrities alike (Oprah visited Georgia to help campaign for her). Want to know more? The BBC's Courtney Subramanian scoped out the situation on the ground.
• Andrew Gillum in Florida is also vying to become the first African American governor. He's in a tight race against Ron DeSantis that's been marred with racial tensions. The BBC's Anthony Zurcher explained how the ugly fight has been playing out ahead of voting day.
• Dave Brat, a Republican Representative, is fighting for re-election against Democrat Abigail Spanberger, a former CIA officer. A Brat defeat - if it comes on the heels of Democratic victories elsewhere - would be interpreted as a good sign for those cheering the Democratic cause.

Dave Lee
North America technology reporter

Image source, Press Association

The last time the US went to the polls, it was nothing short of a disaster for Facebook, Twitter and others.

But, as polls draw to close, there's good news for Silicon Valley.

It appears measures put in place have been mostly effective, with co-ordinated influence campaigns seeing limited efficacy, and voter suppression efforts often stopped at source.

But, consider this phase one - experts warn the task may only just be beginning.

Read the full story here.

Judges in Georgia and Texas have authorised polls to extend their hours to allow more time for voters.