If you work for the cabal and you’re assigned with controlling the US elections and politicians. Given a 10 billion annual budget, full NSA, CIA , MOS intelligence on your candidates. You control the voting machines etc.

How hard would it be to bribe, blackmail the congressmen, senators?

How hard would it be to take over the RNC and DNC?

Once you control a politician you would then make sure there are no term limits.

You would not want more than 2 parties, you only want the illusion of a choice.

You would not want to work harder than you have to trying to control more than 2 parties.