Re: Buying votes ?
Nah, Alabama is about as safe as is possible for a Republican congressional candidate. Alabama currently has 5 Republican and 2 Democrats in Congress. Huntsville is rep'd by Dale Strong, a Republican.
Midterm elections are coming up, that's what is at stake here.
He said it out loud: it's about a voting system that he can't easily (not impossible though) intimidate.
If he can find excuses to station his paramilitary at selected Colorado voting sites, that adds more pressure on the voters there that may not normally have voted in midterms. This applies to other states he has labeled corrupt.
Congress (both parties) is deeply disliked right now, with reason, and this is about giving candidates Trump likes an edge.