With Election Day just hours away, Kamala Harris, Donald Trump and their running mates spent today blitzing across battleground states. Trump held two rallies this afternoon in Pennsylvania before a late-night event in Michigan. Harris is spending her entire day in Pennsylvania.

It is no accident that both campaigns are focusing their final push on Pennsylvania. The state has long been seen as the most important battleground, in large part because it carries more electoral votes than the rest. Harris and Trump have directed more money there than anywhere else, flooding the airwaves with ads — Harris focusing on the economy, Trump on fear.

In several states a majority of voters have already cast their ballots, and you can see the breakdown here. But that’s not the case in Pennsylvania, where most of the votes will be cast tomorrow. The state’s remaining voters could prove to be decisive: Trump has broad support among people who are less likely to vote, making turnout especially important for him and other Republicans.

In other battlegrounds:

• Trump is leaning on an unusual canvassing effort funded by Elon Musk.

• A crumbling Republican stronghold in Wisconsin could determine who wins the state.

• Georgia’s relatively new status as a swing state has been overwhelming for residents.

• Republicans believe Democrats are too optimistic in North Carolina.

• Saginaw County, in Michigan, recognizes its crucial role in the election.

• Fights over places like suburban Arizona are set to be important.

• We took a look at crime rates in swing states.

Presidential races are rarely, if ever, this close

Polls show the race to be essentially tied, both nationwide and across the battleground states. Never in the history of modern polling has a race been so close up to Election Day.