Actor Jason Alexander has urged “old Jews” to vote for Barack Obama in the November presidential election.

The Seinfeld star has campaigned on behalf of the current president in Florida, the pivotal state.

“I’m going to talk to the old Jews – some of them think [President] Obama is not pro-Israel [but] he’s very pro-Israel. I have to bring them over from the other side.”

Comedienne Sarah Silverman has also endorsed the campaign to get Mr Obama in the White House.

A recent report by the American Jewish Committee revealed that the majority of Jewish voters in Florida, 69 per cent, will vote for President Obama on November 6.