04/23/2012 01:14 pm ET Updated Jun 23, 2012

Politicians On 'SNL': The Good, The Bad & The Ugly

It's looking like Mitt "Mittens" Romney is in position to take the Republican nomination this summer for the presidential election, which means that he's got about six months to turn himself into one heckuva likable guy.

Of course, that means a mandatory stop on SNL to prove that he can laugh at himself.

What once was a charming, spontaneous act by some politicians has started to feel a little forced, like the show and the candidate are going through the motions.

That's not to say that all the appearances have been duds, but any time you get a non-performer on stage to make people laugh, the results will be mixed. Here are a half-dozen examples of which way these cameos can go.

Don't forget to vote this November.