With several Senate races tight enough for an alternate candidate to make a real difference, whether they're Libertarian or another third party, Day is looking to spend as much as $2.5 million — or perhaps less, if his effort works as designed — to cost the GOP the Senate.

Day's strategy is simple: Use his Stark Freedom PAC to spend relatively small amounts on online ads made with AI that boost name ID for spoiler candidates, figuring he can do just enough to hand those races to the Democrats.

Republican leaders are highly skeptical of Day's efforts, but he sees a real chance at disrupting races across the country. What's more remarkable is how open he is about his goal of ending the Senate Republican majority.