He probably does prefer Cruz, I think he's called him the most consistent conservative in the race, that's an open secret.
Rush also once shilled for Scott Walker, saying he was our perfect candidate, lauding him daily for months.
He also apparently loves a lot of things Trump has done, as his program has pushed him during other times.
You don't like what he's doing today? Call him or get your own show.
No Rush did not "laud" Walker "daily for months." The only one Rush has done that for is Donald Trump.