If CO drifts further towards the Dems because of Hispanic growth, then how else does the GOP get to 270? If not PA, then what's the alternative?
The GOP needs to tack. Period. It needs to become more similar to the Tories in Britain. There is no alternative, absent some fiscal cliff collapse, that involves a tectonic plate shift. In short, absent extreme stress, the die is cast that the US is going to become more like Western Europe.
Since Western Europe has been getting more like the US over the last 50 years I don't think the US is going to change very much.