The Palm Beach County Supervisor of Elections Office held 15 tours to give local residents a behind-the-scenes look at the ballot-counting process.

Mail-in ballots and security measures contribute to counting delays in California's close contests, an election expert says, and last-minute voters in the governor's race may slow things down further.

Election law expert Hans von Spakovsky says California's slow vote counting stems from mass mail voting, a seven-day ballot window, and cure periods.