Country clubs. I'm sure many Jews still associate the GOP with the blue-blooded Brahmins who wouldn't let their relatives join the Myopia Hunt Club.
Same thing with the Irish. Most Irish Catholics up here in Boston are more conservative than Ralph Reed, but wouldn't ever vote for a Republican lest their long-deceased relatives who faced "Irish Need Not Apply" signs in store windows roll over in their graves.
My ancestors were some of those same Irish machine politicians(Detroit). If I can vote for the GOP, so can they.
It's not the Al Smith party anymore. Those same Brahmin types are now mostly democraps.