(Republicans want the intimidation factor.)
Republicans in three states have proposed strike forces against election crimes even though fraud cases remain minuscule.
If they win both Chambers of Congress I think they will charge Democratic Party with conspiring with POTUS Joe on election tampering. They will site the mail-in ballots as being illegal and, therefore, an attempted coup. You watch. Mitch has publicly stated (after impeachment one, I believe) that they will. If that happens then they will likely "delay" further elections until the system can be "fixed." They like puns, you see.
It works well for Putin in Russia and they are doing their best to follow his playbook. This whole Ukraine thing is just to see how much he can mess with Biden.