Ukip means mainstream parties should stop seeing voters as ‘theirs’

How are the two parties reacting to their bruising night in the two by-elections? David Cameron – after telling us, helpfully, that ‘there were two by-elections last night’ – went on to say repeatedly that the results spoke to a ‘wider truth’, that if you vote Ukip, you’re in danger of getting a government led by Ed Miliband.