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It’s so far a three-way race in the Iowa caucus, but the entire GOP field are victors when it comes to late-night humor.

The Center for Media and Public Affairs at George Mason University studied three late night talk shows — Jay Leno, David Letterman and Jimmy Fallon — and found that Republicans were targets of humor more than three times as often as Democrats. The study was of humor from Jan. 1 to Dec. 10.

President Obama was the leading target, with 342 jokes, and Democrat Anthony Weiner was second with 220, but the rest of the list was made up of the GOP field: Herman Cain, 191; Rick Perry, 186; Michele Bachmann, 128; and Newt Gingrich, 110. Rounding out the top ten were Donald Trump, 122, and Arnold Schwarzenegger, 142. Only 79 jokes came at the expense of Mitt Romney.

There was a difference between Leno and Letterman. Leno told twice as many jokes at the expense of Obama than Letterman: 156 vs. 77.