Keeping elections fair is what will happen. Don't need liberal activists in government deciding that the citizens of their state isn't allowed to vote for a conservative.
Voting for a conservative isn't the issue. Voting for a traitor isn't even the issue.
It's only when a traitor acts on his traitorous views that the Constitution says they should be barred from office.
And the fact that you see efforts to bar traitors as an effort to bar conservatives is quite the self-own when you think about it.