Watch Live Stream: Joe Biden's Dayton and Toledo, Ohio Rallies

TOLEDO, OH — Vice President Joe Biden is campaigning for Democratic nominee Hillary Clinton in Ohio Monday. Biden has two stops planned, leading rallies in Toledo and then Dayton. The Toledo event begins at 3 p.m., and the Dayton event begins at 7:15 p.m.

Toledo has been a major battleground site for both the Democrat presidential nominee Clinton and Republican rival Donald Trump's campaign. Both candidates have visited the city in the past month, as have their surrogates. Trump's vice presidential running mate, Indiana Gov. Mike Pence, and Donald Trump Jr. have both stumped there in October. Chelsea Clinton and actor Jeff Goldblum made visits in recent weeks to campaign for Clinton.

Why all the attention on Ohio?

No Republican has ever won the White House without Ohio, and only one Democrat, John F. Kennedy, has claimed the presidency without the state. The Buckeye State has long been the key bellwether for the election. Add in that the candidates are in a virtual tie among likely Ohio voters, and you've got a recipe for numerous visits in the run-up to Nov. 8.

So tight is the race, that a new poll from Suffolk University has Clinton and Trump tied at 45 percent in Ohio. The poll of 500 likely Ohio voters was conducted just prior to the third presidential debate. Trump led by 3 points in Ohio a month ago in the same poll, holding a 42-to-39 percent advantage over Clinton.

“The events over the past month have resulted in a dramatic shift among those Ohioans who self-identified as independents,” said David Paleologos, director of the Suffolk University Research Center in Boston. “In September, Trump led among this group by twenty-seven points. Today, he only leads by six points, and ten percent of independents still have not decided. If Clinton takes the lead among independents, she wins Ohio. If those remaining undecided independents tip back to Trump, he will prevail.”

Trump is currently campaigning throughout Florida. After holding his own in Sunshine State polls, the audio tape of the candidate saying lewd things about women demolished his sway over Floridians. He's attempting to regain steam in that battleground state. He'll return to Ohio Oct. 27 to lead a rally in Springfield. In the meantime, Pence will stump in his absence, leading events in Swanton and Ashtabula Oct. 25.

Watch Biden's Toledo rally below:

Watch Biden's Dayton rally below:

Image credit: Official White House Photo by Sharon Farmer via WhiteHouse.gov