On uniform swing, Labour could hope to gain three Welsh seats tonight.
The latest Welsh opinion poll will indicate if Labour's still ahead in Wales, overtaking the Conservatives since the election was called.
What people say is the most important election issue -and which party will handle it best- helps to explain who they'll vote for.
The next Welsh Barometer poll for ITV Wales is out later today. After the sensational result of the first poll, here's what to look out for.