Stuart Stevens, a Republican political consultant who served as a top strategist for Mitt Romney’s presidential run in 2012, is providing bed-wetting Democrats with fresh diapers after President Joe Biden’s unsteady debate performance against Donald Trump on Thursday night. As the Democrats worry about Biden, who was hoarse from a cold and needed about 30 minutes to warm up, Stevens downplayed the poor showing. “Don’t day trade politics,” Stevens tweeted immediately after the debate. “It’s a sucker’s game. A guy from Queens out on bail bragged about overturning Roe v. Wade, said in public he d…