Ukip have selected East Midlands MEP Roger Helmer to run in the Newark by-election triggered by the recent resignation of Tory MP Patrick Mercer.
Mr Helmer, who defected from the Conservatives in 2012, has come under fire for remarks about homosexuality.
He has said that some people find same-sex relationships "distasteful, if not viscerally repugnant".
Ukip leader Nigel Farage also rebuked him for writing a blog that appeared to draw comparison between same-sex marriage and incest.
However Mr Helmer has insisted he is "liberal and tolerant" about homosexuality and has "no interest in telling consenting adults what they may or may not do".
More top news
Everton footballer Darron Gibson has pleaded guilty to crashing his sports car into a cyclist while drink-driving.
Natalie Aymot claims she got pregnant after a holiday romance with an Australian man but has no way to contact him after losing her phone.
The National Crime Agency website was down this morning following a DDoS attack by hackers claiming revenge for the arrest of six people.