[xyzelement]

// our town's housing supply will grow by about 2% per year. That is not enough to do a gerrymander and it's not going to change your "suburban lifestyle."

I don't get your math. If the town is very closely split as many of NY suburbs are, they may go 49/51 red or blue depending on the year.

2% a year is 8% growth (ignoring compounding..) between two presidential elections. That's enough to lock in the outcome if you can predict that incoming residents are bluer or redder (in this case, bluer) than the existing given how close it is.