San Francisco
New Orleans
New York
Boston
Detroit
Chicago
Anchorage
Portland, Ore.
Honolulu
Baton Rouge
Most have Democrat (or outright communist, e.g., Boston and Chicago) mayors. Most of the above are distinguished mostly by the high crime rates, illegals and bums soiling the streets, and corrupt city government.
The mayor of Anchorage is a registered Republican and, it appears, quite a conservative, but the mayoral election is non-partisan.