This is an over generalization. Red state or blue state, where wealth centralizes, poor people are priced out. Notice that the cities with the highest wealth gaps are not exclusively in blue states.[1]

Likewise, expensive blue states like MA and CA have plenty of places to find affordable housing, they just don't happen to be in the middle of Boston or San Francisco.

[1] http://www.thefiscaltimes.com/2016/06/21/25-US-Cities-Worst-...