Ultimately, the presidential race will be decided by seven key swing states where the margins between Democrats and Republicans are exceedingly close. The states — Pennsylvania, Michigan, Wisconsin, Arizona, Georgia, North Carolina, and Nevada — include some that voted for President Joe Biden in 2020, but that also voted for Trump in 2016. And as recently as this past weekend, polls were so tight in many of them that they remain a toss-up going into Election Day.