Polls are open from 7 a.m. to 8 p.m., and those getting in line just before polls close will get a chance to vote, not matter how long that line is.
The Church of the Narazene in Alhambra was one of several polling sites across L.A. County experiencing trouble right out the gate.
Many voters arrived around 7 a.m. to cast their ballot but found out the official roster with their corresponding voter information wasn't there. It turned out the materials were a few miles away at a polling site in San Gabriel.
Voters were given options to vote provisionally, which can cause a counting delay, or use an emergency ballot. Many didn't want to do either.
"No. I want to make sure my vote counts, I'm here to make sure it counts," said Steve Whitaker of Alhambra.
By 9:30 a.m., a county sheriff's deputy arrived with the correct ballots and rosters.
A similar situation was reported in Van Nuys after equipment did not arrive on time, leaving some voters furious.
"When you go to pick up the stuff in Norwalk to bring it here, whoever does that should be able to open that up and have it inspected to make sure everything is in, seal it back up and put your check marks on it or whatever," upset voter Tina Matz said.
The Los Angeles County Registrar said the emergency ballots were provided as a safeguard for situations like these and that the ballots were counted.
Over the weekend at six early polling stations in Los Angeles, the turnout was huge. Thousands of voters waited in line, bringing a sense of urgency this year.
California voters aren't just voting for a new president. There are 17 state propositions, including the legalization of recreational marijuana.
Those casting their ballots are also picking Sen. Barbara Boxer's replacement: Attorney General Kamala Harris or Congresswoman Loretta Sanchez.
Secretary of State Alex Padilla reassured voters Tuesday morning about keeping their vote safe.
"In California, we go the extra mile to make sure the elections system is secure. One great example: All the computers used to cast a ballot by law cannot be connected to the internet," he said.
Meantime, those spending hours in line say the waiting is worth it, knowing their voice will be heard.