Polls have closed in the Newark parliamentary by-election triggered by disgraced ex-Tory Patrick Mercer's decision to stand down.
The Conservatives are on course to hold off the threat from Ukip but only with a massively-reduced majority, according to polling.
Mr Mercer, who quit over what a sleaze watchdog said was the worst breach of transparency rules it had dealt with, won by 16,152 votes from Labour in 2010.
Ukip has put up MEP Roger Helmer - re-elected to the European Parliament in the party's "earthquake" victory last month - to take on Conservative Robert Jenrick in the constituency.
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One story dominates Thursday's front pages with some newspapers printing emotive pleas to voters to keep the United Kingdom as one.
After a mild start temperatures should pick up, with the south of England seeing highs of 26C.
In Edinburgh tonight you can hear it and feel it. The buzz, the banter of the day and the thrilling sense something big is coming tomorrow.