The Planetary Society has posted both Obama's and McCain's statements on space policy.
Both sound good, I'll admit. Obama's is a lot more thorough, with more specifics (which I had to chuckle over, given that many of his detractors falsely claim that he only makes broad generalizations, with no specifics). Both hit a lot of the high marks: we need to explore space, they both support NASA but see that it needs work, Constellation needs attention and money, and so on. Again, Obama's statement is a lot more detailed (including education, which I like), with clearer statements about funding another Shuttle launch if needed, and other things I've previously discussed.
As before, I think they are pretty close, with Obama edging out McCain when it comes to policy. And, as I said before, I'm not a one-policy voter, and McCain has gone a long way out of his way to alienate folks like me (you know, reality-based people). We're still a long way (sigh) from November, so we'll see how this plays out. In general space and science policies are not fodder for the mainstream media, so keep your eyes out here for more info as I find it.