Former Mayor Rudy Giuliani has endorsed Curtis Sliwa for mayor and is urging fellow Republicans in the city to vote for the Guardian Angels founder.

In a taped phone message sent to GOP voters, Giuliani referred to Sliwa as “my great friend.”

“When I ran for mayor, Curtis and the Guardian Angels were there to help me win, and then they were there to help me reduce crime and make our city livable again,” Giuliani said.

Curtis Sliwa is the leading Republican candidate for New York City Mayor.