[donquixote99]

It's because the Republican party has become the radicalized party of the "paranoid style of American politics" first described in the seminal paper by Richard Hofstadter in 1964. Belief in conspiracy is a primary facet; the paranoid believe their opponents are indeed rigging everything. This justifies 'counter-rigging' whenever possible. See this write up of the modern paranoids in this piece from last year in The Hill. A quote from that:

Hofstadter saw evidence of the paranoid style in radical movements, mostly on the political right, throughout American history — the Anti-Masonic Party, the Know Nothing Party, the Populist Party, nativist, anti-Catholic, anti-Mormon and anti-Semitic movements, investigations in the 1930s of “merchants of death” (munitions makers and bankers who had supplied and financed World War I), McCarthyism, the John Birch Society. Add to that white supremacists, MAGA enthusiasts who see a gigantic conspiracy to steal the 2020 election, and QAnon adherents who believe Satan-worshipping child sex traffickers are the sinister force controlling U.S. government and world affairs.