It screws everything up. Alaska for example. Palin and Begich were the Republicans. Only 1 Dim. Peltola. Too many idiots hate Palin so they wrote in Peltola as their next choice after Begich.
Palin had the most, then Peltola, then Begich not far behind. Drop Begich from the end, give votes to Peltola; and BAM! We have a Dim Rep.
All it does is divide your votes, and it ends up rewarding the party smart enough to nominate 1 candidate, kind of like normal voting!
I said earlier it can be rigged by having fewer candidates than the opposing party. And Democrats will enter "Republicans" into the race to achieve that.