Turnout at the Newark by election looks like having been around 53% - high for a by election.
A party source has told ITV News that with the mainly urban areas (which favour Ukip over the Tories) counted the numbers look like Cons 37%, Ukip 33%, Labour 18%, Lib Dems 2%.
Labour are briefing that the Conservatives have thrown everything from the kitchen sink to the Aga at this and still lost a lot of votes to Ukip.
The Conservatives say if they win this it'll be their first by election victory whilst in Government for 25 years.
More top news
The Duke of Cambridge told crowds he was "delighted" to be back in the Commonwealth country.
When and where are they on, and how do they work?
What better, more dramatic spectacle has there ever been on American television?