Because of the unpredictability of swing states, they are crucial in determining the outcome of presidential elections. Since states can "swing" for either candidate, candidates will focus on winning over said states throughout the campaign period.

Here's a look at the person in charge of elections in each swing state, including Pennsylvania, Michigan, North Carolina and Georgia.

As votes are counted and polls close across America, Google Trends data shows that many are wondering which states does their preferred candidate need to win to take the presidency.

Both Donald J. Trump and Kamala Harris fought hard for Pennsylvania’s 19 electoral votes, dumping more money into the state than any other by far.