Vito, Sonny, Hagen, Sollozo, Barzini, McCluskey, Bonasera, Tessio, Clemenza, Brasi, Greene, Pentangeli, Roth, Ola...all were registered to the Democratic Party, the Party of Compassion.

Michael registered Republican once he made the move to Nevada.

Carlo never registered in his life. For Fredo it didn't matter - Republican/Democratic/Independent - he just enjoyed a good party.

The question is Geary? Nevada's senators in the 50's were primarily Republican.