Donald Trump's supporters say they want to "make America great again," and Hillary Clinton backers are fond of saying that they're "stronger together." But America's undecided voters don't have a unifying slogan, and many of them say they don't see any good options, either.

Analysts say undecided voters make up about 10 to 15 percent of the electorate, and they almost always determine the outcome of the presidential race. But this year, it seems they aren't really trying to figure out who they like more -- it's more about who they dislike less.

"This is the first time in the history of polling that we have two candidates who are both over 50 percent negative," says political consultant Mike Dawidziak.

Experts say it means many undecided voters will either take a chance on a candidate they're not entirely thrilled with, or just stay home.

"I'll stay away from it. I don't want be part of the damage -- 'Oh man, I made this happen.' No," says Luis Pelaez, of Freeport.