Tim Farron has confirmed he will run to be the new Liberal Democrat leader.
Mr Farron joins former health minister Norman Lamb as the contenders to replace Nick Clegg following the party's disastrous general election results.
One of only eight surviving Liberal Democrats MPs, Greg Mulholland, has said the party's new leader must be someone who defied former Deputy Prime Minister Nick Clegg over student fees.
Mr Mulholland, who hung onto his seat in Leeds North West, has ruled himself out of the running but appeared to endorse Tim Farron with a call for a 'tuition fee rebel' to take over the position.
He said the controversy over the issue, along with backing NHS reforms and the so-called "bedroom tax" was one of "three fatal errors" made by Mr Clegg after he took the "right decision" to join forces with the Tories.
The rapper told his 859,000 followers on Twitter that he was a fan of the North Norfolk MP.
Nick Clegg has resigned as leadrer of the Liberal Democrats after the party suffered their worst General Election collapse in years.