One thing I never quite got, maybe one of the 'mericans can fill me in. I understand the requirement to register to vote (we basically do the same in UK) -but why the requirement (? desire?) to register as a particular type (Repub/Dem/Indipendent)?
Everything I have seen says it does not bind you in any way (lots of registered repubs look to likely vote Biden) - so what is the dope?