In battleground states, undecided voters could really turn the tide of the election. But it's not just those voters. Unaffiliated voters are poised to have a national impact as well.
You'd think Margaret Deluca would be relieved now that she knows who she's going to vote for, but that's not the case.
"Well I feel that I'm making the best choice, "Deluca says, "And it's with a little bit of reservation."
For months, Deluca, a registered democrat but long time independent was trying to make up her mind.
So what prompted her to finally decide now?
"Well the presidential debate did bring some points clearly home in Hillary's favor," Deluca says.
Deluca falls in-line with a recent CNN/ORC poll which shows seven out of ten voters in the battleground state of Colorado have made up their minds about who'd they'd vote for.
Two out of ten said they might still change their decision. The poll shows the same thing in the battleground state of Pennsylvania.
Deluca says among her friends there's another sentiment.
"A lot of people I know it's not a matter of being indecisive as to who to vote for its whether or not to vote at all," Deluca says.
Political expert Norman Provizer says that will be the biggest challenge for candidates hoping to sway undecided voters with just weeks left before election day.
"One thing you always have to keep in mind about undecided voters is frequently at the end of the day they won't vote," Provizer says.
Provizer says if they do vote, most voters will do so along party lines.
But unaffiliated voters are a wild card.
Of Colorado's more than 3 million active voters, more than a million are unaffiliated, more than the number of Democrats and Republicans, just like we saw in the battleground state of Iowa.
Provizer says ultimately getting undecided voters to the polls comes down to one thing.
"You've got to motivate them," Provizer says. "And if you can't motivate those people the default position is for them not to vote."
Deluca is hopeful that won't be the case.
"I think that the other undecided voters will eventually come around to you know toe up to the booth," Deluca says.
Decisions in a swing state that can impact the entire country.