I've noticed there is a significant discrepancy between the national ads, the in-state ads, and what the local canvassers/protesters/campaign offices say about the varying issues of the day. The biggest problem the conservatives are having in local politics (and this goes back to the Tea Party phenomenon) is that the local and to a certain extent the statewide Republicans are having a lot of trouble holding on to the message, when that used to be their biggest strong point.
It strikes the local thinkers (admittedly over beer at the cafe the Philosophy and Poli-Sci students hang out in) that the Republican party is trading their patented Party Unity away in order to more firmly cement themselves in with the religious social conservatives, and for a large number of independents and moderate Democrats, the fiscal message is getting lost because it's simply not as important to them as gay rights, pro-choice, drawing down overseas military commitments and domestic surveillance, etc. And it's the rhetoric that's winning the day for the most part right now--we'll see if there's any backlash to Obama's/the Democrats' strong words on some of those subjects compared to their weak or contradictory actions, but it's really too soon to tell in the mainstream right now.
Stimulus bill aside, Specter's going to rise or fall with me on whether he decides to go full-bore Democrat all of a sudden or stays in the political place he's been solidly in for the last two decades. One of the things that I always liked about him was his stance on abortion--not because of his position, but because he was willing and able to say "I'm a Republican, but I'm not straitjacketed to their platform on every single issue." In the political climate in this country that took a certain amount of personal integrity.
The battle lines the parties are drawing are shaping up to be in vastly differing locations for 2010, with a gulf between them--but I suppose this early on we can expect both major parties to be staking out defenses on safe-with-the-base territory and waiting for the other side to engage them.