Wonkette founder Ana Marie Cox and ex-Rocketboom anchor Amanda Congdon are good examples.

FORBES: Blogging Into The Mainstream

She intends to try to contest the leadership, while economist Tim Congdon and former boxer Winston McKenzie also hope to stand.

BBC: UKIP considers leadership hopefuls

Professor Tim Congdon, UKIP's economic spokesman, said Mr Cameron's promise to stand up for British interests in Europe - including his guarantee of a vote on the Lisbon Treaty - had turned "to jelly".

BBC: UK Politics