Oh, it's definitely not "always the republicans", the Democrats also can't figure out their own email addresses. I routinely receive DNC and other left wing nonsense, including invites to parties, Biden fundraisers, etc. to my more "generic" (ie. first initial, last name) Gmail account. I've marked these as spam, unsubscribed, etc. and still get them because either the orgs are dumb (wouldn't be a surprise) or people keep signing up again when they don't get them to their real address.

This is an "I'm dumb and can't remember my email address" issue, not a political one.

I also get the usual run of the mill receipts, reservations, etc.