False Flag Operation in Wisconsin's Open Primary
When Robert "Fighting Bob" LaFollette pushed for the creation of an open-primary system in Wisconsin, his intent was to weaken the power of political party bosses beholden to special interests, like the railroad barrons. A central tenet of the progressive movement, opening up the primaries allowed independent, progressive activists to advance their political causes.
In its purest form, an open-primary system means that anyone can vote in any primary, and anyone can run in any primary.