This election is shaping up in interesting ways. As has often been mentioned, senators fare poorly in presidential elections, with only Harding and JFK elected directly from the Senate over the last 100 years. But this year we are guaranteed our next President will come from the Senate. Not quite a first, but close enough. . .
Governors have done better in presidential contests because as executives they can claim a mantle of action, while senators only give (long) speeches and vote on messy compromises. McCain looks more like a man of action than Obama, and Palin can help a little more than Biden can in the reformist/executive action department.
The real first is obvious: Come January 20, we are either going to have our first black President, or our first woman Vice President. Now, that may be about the only change you can really believe in. . .