MORNING MINDMELD: As an antidote to the (perhaps) irrational Republican exuberance that seems to have seized D.C., we pause for the following public-service announcement. To be President, you have to win states, not debates. And Mitt Romney has a problem. Despite a great debate and what The Wall Street Journal’s Neil King Jr. on Sunday called a polling “surge,” Romney has not put away a single one of the must-have states. President Obama remains the favorite because he only needs to win a couple of the toss-ups. Mitt needs to win most of them. A cold shower for the GOP: Most polling shows Romney trailing in Ohio, Wisconsin, Nevada, New Hampshire and Iowa – by MORE than Obama trails in North Carolina. Glenn Thrush and Jonathan Martin reminded of us of the 2008 primary analogy: Whatever else Hillary Clinton had, Barack Obama had the math. And math, not momentum, gets you the big house, the bulletproof car, the cool plane. We now resume our regularly scheduled Playbook.