Back in the late 80s and early 90s, the mostly liberal talker KGO had a contract to run 1 hour of Rush in the lunchtime gap between their local hosts' shows. It also kept competitors from having all 3 hours of Rush. I'm pretty sure I heard "Rent-a-Mob" and heard of papers' "Activist" want-ads section from local host Jim Eason, who was conservative-libertarian.
In the 90s, the owner of KGO, Cumulus Media, moved its conservative show hosts over to KSFO, which it also owned (both are/were SF stations, KGO being the more powerful). Over time, that Cumulus screwed with KGO's content, trying to get the same bang for less bucks; meanwhile, KSFO flourished, gaining significant audience ... in the SF Bay Area. KGO, which had long DEFINED talk radio in the SF Bay Area, never recovered from Cumulus' monkey-wrenching, and Cumulus moved all its conservative content over to KGO in January this year and took KSFO off the air.
It was KGO/KSFO host the late Lee Rodgers who advised, "Never give your heart to a politician, they will break it." He also said, "There is only one way to look at a politician, down."