Former president Donald Trump and Vice President Kamala Harris hit key battleground states on the final full day of campaigning in their last push ahead of the big election day for the top post in the White House. Harris, 60, is the Democratic presidential candidate, while Trump, 78, is her Republican rival. More than 78 million Americans have already cast their votes as of Monday, according to the University of Florida's Election Lab that tracks early and mail-in voting across the US. The vice president spent her entire day in Pennsylvania holding five rallies with the last one scheduled to be held in Philadelphia as late as 11 pm. Pennsylvania and Michigan are considered to be the ground zero for the 2024 presidential elections. Arizona, Nevada, Wisconsin, North Carolina and Georgia are the other five battleground states. A candidate needs 270 electoral college votes to be declared the winner of the 2024 presidential elections. What you are all signing up to do today, and what .