End the Duopoly: a Consensus Issue

I think people are starting to understand the Caroll Quigley, "swap out the talking head party every so often to keep the masses placated", strategy. While I'm concerned that any third party might eventually be captured into the cartel, it may be worth voting for "the most popular third party candidate" as a game theory strategy. Third parties might even form consortiums where they agree to hold a primary and only run the most likely candidate with other candidates agreeing to endorse the candidate before the election.