This one's not really about partisanship but rather about cost of living and purchasing power. $15/hr would buy you a lot more in a red state, where things are cheaper, than a blue state where things are more expensive. Honestly, a federally-mandated minimum wage does a disservice to the poorer areas of the country. Why would a company (and thus a tax payer) move to a place that's farther out, has fewer services, etc if they have to pay the same for labor. It's no wonder that these places end up being resource-extraction driven -- the labor pool, which naturally would be cheaper, has been given a price floor.

$15/hr min wage makes sense in Cali and other high cost states. It should be up to the states, and really ought to be set at the local level.