Now is the time to ask theses questions. This boulder moves slowly.
BTW, why not have New Hampshire’s GOP presidential primary closed for once?
Who is more open in their primaries, Dems or the GOP?
I would eliminate primary elections entirely, if I could. They have failed, again and again, to either identify or choose the best candidate.
If I could not eliminate them, I would limit the franchise to enrolled party members who had been enrolled continuously since the last Presidential election, and who could prove that they had donated either >$5000 or had given at least 625 volunteer hours to party organizations since the last Presidential election.
If I could do neither (and a lot of states have passed laws governing primaries), I would make sure that any delegate selected this way had no right to vote at the National Convention, which should be held no earlier than September 25-30 of the year of the election.