Generally speaking, political ads do not air during the Superbowl. However, Chrysler snuck one past the network. It's halftime for the Obama administration, and Clint Eastwood reminds everyone to have hope, because Detroit (and by extension, America) is coming back. The ad has been pulled off many websites, "due to a copyright claim by NFL properties LLC" but you can still see it here.
There is even some (altered) footage of the Capitol protests in Madison last winter (you can see the difference between the original signs and Chrysler's genericized versions here).
If you watched the post-game presentation of awards, you may have seen another political ad here in Wisconsin. Apparently, someone named Hari Trivedi is running for Wisconsin governor as an independent (which will allow him to skip the primaries and get on the ballot in the general recall election). Although he will need to gather signatures to get on the ballot, he clearly has some money to put into his campaign. He appears to be a pro-business, social libertarian. He may be hoping to attract Republican voters who are fed up with Scott Walker but won't vote for a Democrat.