Polls cross the country will remain open until at least the early evening local time as Americans cast their ballots on Election Day.

The vote center at the University of Nevada, Reno finally closed after 9 p.m. Polls closed at 7 p.m., but Nevada law allows anyone in line by that time to cast a ballot. On the big national election maps show as of 8:20 p.m. Tuesday, Nevada is a slowpoke.

As voters head to the polls Tuesday, here's what you need to know about the 2024 election results from seven key swing states, including vote-counting timelines and potential delays.