People like their homes, and aren't going to move away so easily. Most people have friends, family and attachments to where they live and aren't willing to pick up and move for ideological reasons. Many of those attachments cross party lines.
What you want is only a simple move away. I couldn’t understand a conservative staying in a “people’s republic” just because they like their house.
I live in DC, which is more or less a "people's republic." I like it here, and am not going to move out over politics. My friends and family run the gamut of political views and ideologies. Giving all of that up just to be surrounded by people who agree with me politically seems silly.
You may not feel that way when order breaks down and imported essentials such as food are limited or the grid goes down.
The thing about being surrounded by people with conservative ideals is that they mostly will not be looting your home, will band together to preserve some sort of order and will have prepared to the same degree as everyone else. They will have real skills that relate to survival.
Disclosure: I live in a blue county in a blue state, but even my Dem neighbors live by much more conservative values and are more self-sufficient than the average resident of DC and environs.