Election TV debates only arrived in the UK in 2015 . Broadcasters are keen to repeat the head-to-head format in the run-up to the 2010 poll . But factional politics and arguments about who is invited may derail a TV debate .
Election TV debates only arrived in the UK in 2010 . Broadcasters are keen to repeat the head-to-head format in the run-up to the 2015 poll . But factional politics and arguments about who is invited may derail a TV debate .