Ukip's new leader Diane James has vowed to take on the Tories, but is already facing disagreement within her party having banned Ukip MP Neil Hamilton from speaking at the party conference.
ITV News political correspondent Libby Wiener reports.
Ukip deputy chairman Diane James has won the contest to replace Nigel Farage as the party's leader.
The MEP, who was the frontrunner in the contest, took the top job with 8,451 votes.
Taking to the stage at the party's annual conference in Bournemouth, she said: "I still haven't quite come to grips with it.
"I'm still pinching myself but I'm just immensely grateful for what you have done and what you have bestowed on me."
The new leader said the party had "moved mountains on the political landscape" and was the "change movement of the United Kingdom".
The UK Independence Party's Diane James, has described beating the Tories to take second place in the Eastleigh by-election was a "humongous" shock that represented a "seismic shift" in UK politics.
Conservative candidate Maria Hutchings polled 10,559 votes - more than 1,000 behind Ukip, which snatched huge chunks of the coalition parties' 2010 general election vote share, taking more than 27% of the total.