get the presidential election results map from 2000 and 2004, and identify all red-states.
you need to avoid driving through these places; that way, you can contribute to the destruction of their already fucked up economies by not paying for gas (in these states), not buying food (in these states), and not otherwise helping the rednecks (in these states).
if you cannot find a completely blue route from boston to san francisco, just fly.
How'd you know I wasn't aa red state kind of guy, anyways. Just because I come from a country that pays 40-50% taxes and where the state provides free health care, education (including living expenses for students) and a social savety net for all ;). I bet some of your Republicans would should themselves if they had to live here.