WTF is going on with the Texas (R) Congress members retiring?

[tanyev]

9. Sometimes gerrymandering backfires.

Say you've got a safe Republican district next to a swing district. Because you're greedy, you gerrymander that to be two Republican districts that are both less safe. A few years go by, demographics change a little bit, an odious narcissist becomes the face of the Republican party, before you know it, both districts are at risk.