Conan vs Jay vs Letterman: The best in Late Night Presidential Political Jokes.

The comedians and candidates collide. You decide:

"Barack Obama announced that after all the insulting comments and bitterness, he is severing his 20-year relationship with Reverend Wright. After hearing this, Bill Clinton said, 'Wait, you can do that with someone?'" --Conan O'Brien

"Kind of a big brouhaha with the Republicans going on here, because (Jenna Bush) said she wasn't sure that she was going to support McCain. She said she's 'open to learning' about the other candidates.' … But come on, this is kind of a treason in the Bush family. Not supporting a Democrat -- being open to learning. That's outrageous." --Bill Maher

"Hillary Clinton says she's willing to debate Barack Obama. This is what she said: anytime, anywhere, and would even meet him in the back of a truck. Yeah, which is surprising, because the 'anytime, anywhere, even in back of a truck' offer is usually made by Bill Clinton." --Conan O'Brien

"Hillary Clinton announced today she’ll appear on 'The O'Reilly Factor.' That should be a great confrontation. On one side, a loudmouthed bully who wants to tear apart the Democratic Party and on the other side, there's Bill O'Reilly." --Craig Ferguson

"Tomorrow night on Fox News, Hillary Clinton is gonna be making her first ever appearance on Bill O'Reilly's show, 'The O'Reilly Factor.' Yeah, Hillary should do well, 'cause she has years of experience yelling 'Shut up, Bill!'" --Conan O'Brien

"President Bush is taking a lot of heat right now, with the economy. President Bush has just been accused of trying to avoid questions about the economy. Because during yesterday's press conference, he told a reporter that she looked good in yellow and then asked about her baby. Even more embarrassing for Bush, the reporter was Wolf Blitzer." --Conan O'Brien

"If you're following the campaign, you know John McCain is currently on his tour of forgotten places. He's touring what he calls forgotten places. Of course, when you're 71, the room you just walked into is a forgotten place, isn't it? 'Why did I come in here again? I was just here.'" --Jay Leno

"Kind of a strange thing happened this weekend at a big event in Washington, DC. President Bush, I guess he got excited, so he picked up a baton and he started conducting the U.S. Marine Band. Yeah, unfortunately, the president got upset because the band didn't know the song, 'The Wheels on the Bus.' They go 'round and 'round, apparently." --Conan O'Brien

"How 'bout that John McCain, you like John McCain? I like John McCain. He looks like a guy who goes grocery shopping and yells at the bagboy, 'Put the eggs on top. Hey, hey junior, put the eggs on top.' He looks like a guy who still calls the TV the 'Idiot Box.' ... He looks like a guy you take shopping and have to yell into the changing room, 'Everything alright in there, pop?'" --David Letterman (Read more of Letterman's jabs at Old Man McCain)