By Laura Hertzfeld
Updated September 18, 2012 at 12:00 PM EDT

President Obama is making his second-ever Late Show with David Letterman appearance Tuesday night, and Dave couldn’t resist asking the incumbent for his reaction to the election buzz of the week — yes, that video in which his opponent, Mitt Romney, is caught on camera saying that 47 percent of the voting public don’t matter to him. CBS released some of the interview early on YouTube.

“One of the things I’ve learned as president is you represent the entire country,” Obama said, in an appearance that starts off with some humor, but gets pretty serious quickly. “My expectation is if you want to be president you have to work for everybody and not just work for some”

Letterman did joke with Obama about staying fit (he weighs 180, for those keeping score at home).

For the rest of the interview, Letterman airs at 11:35 p.m. ET on CBS and we’ll have our take on the President’s appearance later tonight. Check out the preview below:

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