Photo Illustration by Luis G. Rendon/The Daily Beast/ReutersWelcome to Trail Mix, a fun but nutritious snack for your election news diet. See something interesting on the trail? Email me at jake.lahut@thedailybeast.com.This week, we dive into the real big spender in the GOP primary. Plus, the latest on President Biden’s potential new challenger, and a fake elector donates to the last candidate you’d expect.Outspending the masterVivek Ramaswamy’s polling bump may have peaked in August, but just b