With high turnouts expected and a number of close races that will decide which party controls the Senate, election results may not be known for days or weeks.
If neither candidate gets 50% of the vote, the Senate race will go to a second round in four weeks.
In Pennsylvania, the process of opening and counting mail-in ballots can't begin until Election Day because of a tight Senate race.
There are several factors that could delay voting results in Nevada, including the state's practice of sending Absentee ballots to all voters per legislation passed in 2021, as well as rules that require election workers to wait until the polls close to begin countingAbsentee ballots.
The Secretary of State said Thursday that the results will be delayed at least a day because of a high volume of Absentee Ballots.
Absentee ballots can be counted ahead of the election in Arizona, but the Secretary of State, who is running for governor, has said that day-of results are not going to happen.
Absentee ballots can be counted once the polls open on Election Day, but results won't be known until the early morning hours after the election, according to the Wisconsin Elections Commission.
If one candidate wins the majority, they are declared the winner and the process stops there.
After the 2020 presidential election, Trump and his supporters claimed that the results should be determined the night the polls close, an effort to undermine the Absentee ballot counting process. While results did take longer in 2020 due to high percentages of voters in both parties choosing to vote early and avoid the polls, Trump wrongly claimed that results have historically been determined on election day. Delays in election results have been going on for more than 100 years. Bush won after a month-long recount in Florida that ended in the Supreme Court's favor.
There are a number of GOP candidates who are not willing to accept election results. The 2020 presidential election was rigged in favor of President Joe Biden, according to false claims made by both candidates.
A total of 36,436,069. As of Friday, the number of early in-person votes and mail-in ballots had been counted. This year's turnout is expected to be similar to last year's, when 53.4% of the eligible population voted.
There is a reason election results may not be known immediately.
The experts predict a high voter turnout.