A TV debate takes place among Scottish leaders - the last of the election campaign

Nick Clegg says public sector pay rises will be a Lib Dem coalition red line

Labour restates its pledge to cut tuition fees to £6,000

David Cameron warns against protest votes and says people must choose their 'preferred prime minister'

Nigel Farage insists UKIP is growing in popularity and calls Mr Cameron 'desperate' for talking down the party

There are four days left until the general election