One week until the election

(NBC News) The presidential campaign has been grinding on since March 2015, and now the vote is just one week away.

Hillary Clinton has fallen behind in one major national poll, but Donald Trump needs a string of wins in swing states where he trails to claim victory.

Campaigning Tuesday in Pennsylvania, Trump focused not on email, but health care.

“Premiums are soaring, doctors are quitting, companies are fleeing,” Trump said.

He promised a special session of Congress to repeal Obamacare.

“Its one of the single most important reasons why we must win on November 8th. We must win,” Trump said.

Hillary Clinton, meanwhile, campaigned in the biggest battleground, Florida.

Turnout is the question now. Will bad news on Obamacare premiums and the renewed email probe prompt enough Clinton voters to stay home for Trump to capture the necessary swing states?

Copyright NBC News 2016