I'd like to know the demographics of registered Republicans and Democrats.?

77% of adults in the U.S. are registered to vote. Scarborough Research (SR)

29% consider themselves Republicans. (SR)

30% say they are Democrats. (SR)

10% consider themselves Independents. (SR)

67% of adults say they always vote in presidential elections; 47 percent always vote in statewide elections and 39 percent always vote in local elections. (SR)

111 million people voted in the 2000 presidential election: 55 percent of the voting-age population, 60 percent of the citizen population and 86 percent of registered voters. U.S. Census Bureau (USCB)

.....and the list goes on, check out the link

Don't bother. There's enough obsession with demographics in the first place. Unless you're a campaign worker or volunteer it shouldn't matter to you.

Its going to vary geographically. Other than the DNC and RNC, I'm not sure who would have national numbers.

You cant, since the information is not recorded.

cantanke..., Google it. Good luck!!!

go to wikipedia