What we need here is a little bit of honesty says UKIP's Nathan Gill - he suggests we cannot control immigration while UK is in EU

Liz Smith comments: "There are strikingly different tones struck by the parties on immigration.

Nathan Gill followed the usual UKIP line, adding "if we have need for you, you are welcome here".

The Conservatives and Labour have both said there needs to be controls. But both Kirsty Williams and Leanne Wood used the exact same phrasing in refusing to use immigration as "a scapegoat".

Pippa Bartolotti claims that it - or perhaps should be - a different debate in Wales, arguing that there has actually been a net loss of people in Wales.

Leanne chose to highlight that fears on immigration are strongest in deprived areas, indicating that this is a symptom of poverty rather than a crucial problem in itself.

The Greens Pippa Bartolotti says Windrush generation were rebuilding our country in the 'fifties

Liberal Democrat Kirsty Williams says when we're talking about immigrants we're talking about individuals who want to contribute

Plaid's Leanne Wood says highest level of anti immigration feelings have the lowest rate of immigrants - and that may be because wealth has not been distributed equally

If it wasn't for us do you think we'd even be discussing immigration right now, says UKIP's Nathan Gill

Labour's Owen Smith says we also need to protect migrant workers from being exploited

Conservative Stephen Crabb said they've made great strides in reducing immigration from outside the EU

Nick Servini
Political editor, Wales

Nick Servini posts on Twitter: Gill says to Crabb "why are you here?" after Tory failures on immigration. Crabb slight delay in answer but picks up defence #WalesDebate ., external

The Greens Pippa Bartolotti says a common view of the world is what keeps Europe peaceful

Plaid Cymru's Leanne Wood says she is concerned about rhetoric of some of the mainstream parties on immigration

Labour's Owen Smith says we should all reflect on the motivation of people seeking safe haven

Want to know just where all the parties stand on immigration? We've got that covered

Policy guide: Where the parties stand

Liberal Democrat Kirsty Williams says she wants Britain to be open, but not open to abuse.

Conservative Stephen Crabb says we do need to be positive about immigration, but it needs to be fair, but firm

It's now questions about immigration

Liz Smith:

"Owen Smith and Stephen Crabb are used to facing each other in Wales questions and using the NHS as a 'political football' in Parliament is something they have arguably both been guilty of. Various statistics on waiting times and the lack of a Cancer Drugs Fund in Wales are the usual 'weapons of choice'."

Time to introduce our guest commentator this evening - Liz Smith.

She is head of monitoring at newsdirect wales, a political intelligence company based in Cardiff Bay.

She is giving us a steer over the next hour or so of the debate

Only 87 mansions in Wales to tax says Conservative Stephen Crabb

Kirsty Williams has continually pushed for an all-party NHS Commission for Wales, which was looking possible for a while when she spoke to the Health Minister about it.

But as Leanne Wood pointed out, there were concerns that it would be overly politicised.

This was supposed to be a solution to the NHS being used as a 'political football' but the Commission ended up just becoming another part of the argument.