I've highlighted something you said. Voter fraud.
I think that might have made ALL the difference in certain key districts. We still control a lot of states, and this fraud needs a several state-level FBI type of investigations. Leave the feds out--let the Republican governors appoint special prosecuters, and really, really nail the cheaters. Keep it vigorous but low key until they have evidence.
I hate to throw water on your good idea, but it will go no where.
Across the land, our State Republicans are not much better than our Fed RINOs. They are in the end, just politicians. Yea, here and there are good Conservatives, but none of them will go the extra mile to fight voter fraud.
Scott Walker aside, I see no Republican leader at the State level with a Warrior mentality.