Clinton is headed to Pennsylvania, Michigan and back to Pennsylvania, then finishing up in North Carolina today. She spent time in Ohio this weekend with some all-star supporters such as Beyonce, Jay Z and a native son, LeBron James.
Of all the competitive states on this year's map, only Florida needs to go into Clinton's column for her to win the race. If she loses Florida but wins Nevada, Michigan and Pennsylvania, all of which Democrats won in 2012, then she still triumphs.
Ohio, New Hampshire, Iowa, North Carolina and, to a lesser extent, Arizona and Georgia are all close as well and could add to her lead or bolster her rival Donald Trump. But even if he wins all six of those states, he will also have to clinch some combination of Florida, Pennsylvania and Michigan to have a path to 270 electoral votes.
Clinton campaign manager Robby Mook does not seem worried about Trump's latest plays in Michigan and other typically Democratic states like Minnesota and Wisconsin.
"I think he needed to get those into play much earlier. I'm not concerned that he's spending so much time there at the end, because he didn't build a ground game. Just this weekend, our team knocked on 7.2 million doors, made 8.1 million phone calls," Mook told "Good Morning America" today.
"I don't think Donald Trump dashing around to these states at the last hour is going to do what's needed to get his supporters out," he said.
One of the keys to Mook's confidence? Early voting numbers.
"We saw just eye-popping turnout in Florida over the last two days, particularly in our strongholds of southern Florida, North Carolina and elsewhere, so we're very encouraged, very positive," he said.