Asked if he still thought that UKIP voters are "closest racists, loonies and fruitcakes" the Prime Minister told ITV News: "We live in a competitive, political world and people make their choices. I'll choose my words carefully. I want people to support my party.
"I'll let people make up their own minds but at the end of the day, at the next election there is going to be a very straight choice. It will be a red, blue choice."
More top news
The double Grand Slam winner said he did not regret giving his opinion, but was 'disappointed' at the way he went about it.
It seems the Prime Minister is waiting to have talks with other world leaders in New York where he is attending the UN General Assembly.
Rio Ferdinand has emerged as a surprise possible choice to be the FA's candidate for Britain's FIFA vice-presidential position