The billionaire mayor contributed the money Friday, state records show.
It's not the first time Bloomberg has done a good turn for his fellow Republican. In March 2005, the mayor spoke at a New York City fundraiser that raised $500,000 for the actor-turned-governor's political operation.
Bloomberg's office did not respond to a telephone call seeking comment.
Last week, the mayor said local and national candidates who troll for campaign cash in New York should be supported financially only if they promise to side with the city on certain issues, such as the distribution of homeland security funds.