Ukip "defector" Mike Whitehead was told last week that he would not be selected as a Conservative candidate at the General Election, according to correspondence seen by ITV News.
The Conservatives say the email extracts - which they say were sent on 1 April - counter the claim that Whitehead was due to stand for the party in Hull West and Hessle, a Labour-held seat in East Yorkshire.
According to the Conservatives, Whitehead was told he would not be selected after refusing to support a local Conservative council candidate.
As you are not on the approved list of candidates of Haltemprice and Howden Conservative Association you will not be selected by the Conservative Party to stand for any ward covered by the Association at the local elections.
As you have stated that you intend to stand in the local, election despite not having been selected for the Party, and despite Mrs Clarke asking you to agree to support whoever is properly selected by the Association to fight the Willerby and Kirkella ward, I am forced to act to protect the Party by refusing to agree to you being nominated to represent the Conservative Party at the 2015 General Election as candidate for Hull West and Hessle.
It is not feasible for me to allow someone to stand for the Party at a General Election who has announced an intention to stand against the Party at another election on the same day.
I am disappointed that this email has become necessary.
More top news
The official Brexit campaign "cheated" during the European Union referendum to get around spending limits, a whistleblower has claimed.
A cloudy and damp start for many southeastern areas, but turning brighter through the afternoon.
Countries have been switching off their lights for Earth Hour, a global call for international unity on the importance of climate change.