I was listening to a “republican jew on the radio call in and he was in the organization and used the term phone booth.
Might be a bad joke but I know many jews and not a single one is conservative.
Really? There are somewhere between 50 and 100 conservative (politically) Jews here on FR that I'm aware of, so there have to be even more than that on FR alone. You probably have met some of them here and didn't know they were Jewish.
BTW, the RJC has attracted some very big Republican names to its events over the years, including Pres. G. W. Bush, who spoke at RJC events several times during his term. The RJC has also hosted a GOP presidential candidates forum during the last presidential primary season.