Media playback is unsupported on your device

Elections: UKIP's Patrick O'Flynn and Tory Vicky Ford

16 February 2014 Last updated at 13:03 GMT

UKIP have "probably maxed out the Tory vote" that it could get and the potential for growth now came from "blue collar disenchanted former Labour voters", said a candidate.

Patrick O'Flynn, who is also UKIP's director of communications, was looking at how it was taking votes from the larger political parties, in a Sunday Politics debate with Conservative MEP Vicky Ford.

She said UKIP has had MEPs since 1999, but they "cannot the deliver" the change they promise, and only her party could deliver an in-out referendum over Britain's future in the EU.

They spoke after watching a Sunday Politics film on the fallout from the Wythenshawe and Sale East by-election.

More from the Daily and Sunday Politics: Watch full programmes from the last seven days via BBC iPlayer; 'like' us on Facebook page or 'follow' us on Twitter

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.