The Conservative gains suggested by tonight's ITV/BBC/Sky exit poll would see at least three Labour losses in Wales.
The seats most at risk are:
Vale of Clwyd
The three losses are based on a uniform swing across Britain but the swing is expected to vary dramatically, with the pollsters expecting further Conservative gains in Wales, in contrast to Tory losses in Scotland and London. That means another six Welsh Labour seats also look vulnerable:
Alyn & Deeside
Polling expert Prof Roger Awan-Scully expects significant Labour losses in Wales on the basis of the exit poll.
The poor showing for the Liberal Democrats in the exit poll suggests that their by election gain of Brecon & Radnorshire would be retaken by the Tories.
There's concerns among Plaid Cymru campaigners that the Conservatives are closing in on Ceredigion.
ITV Wales' Political Editor, Adrian Masters, says turnout is reported high across constituencies.
He's been told that two polling stations in Brecon and Radnorshire have had twice as many voters as their previous record.