"It's that he used to be a satirist who was so interested in politics that he transitioned to becoming a political satirist and then a candidate for office. All because he was really interested in the issues and wanted to make a difference. Most comedians probably aren’t very well-informed about policy issues, but comedians do have both the time and the means to inform themselves if they’re so inclined, and Franken very much was and is so inclined."
Matt Yglesias assures us that we don't just have a clown in the Senate.
(Now, why do I feel that I can predict the first comment?)