That means Democrats are allowed to vote in a Republican primary, and Nimrata has been begging Democrats to flood in and vote for her in the Republican primary.
Are any of you old enough to remember in 2018 Akin running for Senate against Claire McCaskill in Missouri? He was the wing-nut who made the statement that it is impossible for a woman to be raped because if she truly hated the act, the vaginal muscles would tighten making penetration impossible. It was a three way race for the republican nomination. Guess what? Democrats flooded the primary and voted for Akin, and he won the nomination and went on to lose to McCaskill. Democrats LOVE open primaries.
When Trump talks about rigging, he’s referring to secret votes in caucuses and open primaries.