Here’s the bad news: There is now a clear path for her to lose it.

If you drill down enough, it’s clear there are at least four paths to a loss, and any one of them poses a real risk for a candidate likely to follow her usual careful, calculating playbook. The cold math of a potential Clinton defeat is not to be found in national polls, but in the Electoral College—and within each state’s unique demographics and culture. Trump won’t dramatically remake the political map, but he doesn’t need to. He just needs to squeeze a little more out of certain voters in certain states, while Clinton draws a little less.

If Clinton pushes away some of her potential supporters; fails to energize others to vote; and fires up Trump’s base by pandering to her own—well, she just might be able to make the numbers work out for him. If he does pull off the election of the century, Trump’s path to 270 Electoral College votes will begin with 164 practically in the bank, from 21 solid-red states generally considered sure things for the Republican nominee. And here’s how Clinton could push more than enough additional states onto Trump’s side of the ledger—Florida, Ohio, Pennsylvania, New Hampshire, Iowa, Virginia, Colorado, Nevada, Arizona, Wisconsin, Michigan—one mistake at a time.