Conservative UKIP electoral pact: Hannan and Stevens
20 September 2012 Last updated at 11:41 BST
UKIP may have cost the Conservatives up to 20 seats at the 2010 general election with a split in the eurosceptic vote, leading to talk of a ceasefire, pact or merger between the two parties.
Nigel Farage's party is gathering for its conference in Birmingham and Adam Fleming looked at the options on where votes might go if the two parties linked up in some way.
He heard from Conservative MEP Daniel Hannan and Lord Stevens, who defected this week to UKIP.