A lot is being made of a study released today from the Center for Media and Public Affairs that found that latenight talk show hosts have skewered Mitt Romney than all Democrats combined since the party conventions.

You don’t really need a study, though, to tell you that David Letterman is the greatest perpetrator of Romney humor. The fact that Romney has refused to come on his show, but President Obama has, has been a constant source of Letterman’s quips through much of the fall campaign.

The study found that Romney was the target of 148 jokes on “The Tonight Show with Jay Leno,” “Late Show with David Letterman,” “Late, Late Show with Craig Ferguson” and “Late Night with Jimmy Fallon.” Obama was the target of 62 jokes.

Letterman told 44 jokes about Romney and 9 about Obama.

There also were 290 jokes about Republicans and 138 jokes about Democrats.

The study was from Aug. 27 to Oct. 3.

The gap between Obama and Romney may have narrowed, however, following the first debate, what with the president’s panned performance generating many quips.

Not included in the study were other late night hosts like Jimmy Kimmel, Conan O’Brien, Stephen Colbert and Jon Stewart, although the findings probably wouldn’t have changed much.