How many potential UKIP converts are out there?

YOUGOV (Who will still vote for them this year?)

The above link shows how people who voted Conservative, Labour or LibDem in 2010 are thinking of voting today.

So potentially if the percentages are right just how many people who voted for the main three parties in 2010 could now vote UKIP?

In 2010 The Conservatives gained 10,726,614 votes according to YOUGOV 13% of those voters now don't know or won't vote and then 20% will now vote UKIP This gives a figure of 1,866,431

Labour gained 8,609,527 votes 11% of those are now don't knows or won't votes but the ones that will vote 10% say they will now vote UKIP. This figure is 766,248

LibDems gained 6,836,824 vote 20% say they now don't know or won't vote but of the ones that will vote 13% say they will be voting UKIP. This figure is 711,029

In total
   
3,343,708 Who voted Conservative, Labour or LibDem in 2010 who say they will now vote UKIP.

If these figures were uniform across the whole of the country.

http://cdn.yougov.com/cumulus_uploads/document/7uq0x1ih8a/YG-Archive-Pol-Sun-results-160215.pdf