With about 100 million Americans heading to the polls today, the ABC News Ballot Watch Team is tracking possible voting problems and irregularities across the country. Donald Trump has repeatedly called the election "rigged" and warned of widespread voter fraud, while Democrats have brought lawsuits alleging illegal voter intimidation and suppression in Pennsylvania, New Jersey, Michigan, Ohio, Nevada, Arizona and North Carolina.

But election authorities in all 50 states told ABC News they have confidence in their voting systems.

In every national election there are scattered reports of long lines, voting machine malfunctions, ballot shortages, misinformation campaigns and Election Day lawsuits. ABC News is tracking such reports to determine whether they affect voters' rights or election results.

Here are some reports so far:

Election Protection, a group that describes itself as a nonpartisan voter protection coalition, held a media briefing in Washington, D.C., this morning to announce an uptick in the number of calls to its national hotline alleging voter intimidation and harassment. The group said it has heard from 80,000 voters so far on a wide range of election-related issues and expects to receive some 175,000 reports by end of day.

FLORIDA

Several reported incidents of voter intimidation were flagged in Florida this morning, according to Election Protection. In Broward County a group was accused of intimidating at least one voter outside a Hollywood public library. But this report appears to have been erroneous.

"What we understand is there were a group of individuals aggressively assembled outside [the polling place]," said Kristen Clarke, the president and executive director of Lawyers' Committee for Civil Rights Under Law, part of the coalition. "They were approaching vehicles. In one instance, they touched a woman's car. She did not feel free to park her car and cast her ballot and left without doing so."







But later, in an interview with ABC News, Clarke said she was unsure of the timing of the alleged incident at the library and said it might have occurred during early voting, which ended on Sunday.

ABC News has learned this library was an early voting location, not a polling place. People showed up thinking they could vote there and became confused when they were told they couldn't. It was a misunderstanding but reportedly not intimidation.

In Jacksonville, according to Election Protection, a female Republican poll watcher was intimidating voters by getting too close to them as they filled out their ballots at a polling place in the St. Paul AME Church, in a majority black section of the city. A Democratic poll watcher complained to the clerk at the precinct, but the woman refused to leave. She finally left after a Republican poll worker spoke with her.

When ABC News called the church, no one could confirm the incident occurred.

MISSOURI

There were reports of police officers appearing at polls in Missouri — which the Advancement Project, part of the Election Protection coalition, thought might have a chilling effect on minority voters.

Greene County reported it would have a sheriff's presence at polls. While there have been no reports yet of officers in that area, there have been reports of a police presence at a polling place in St. Louis that Election Protection was able to disperse.

NORTH CAROLINA

The North Carolina State Board of Elections passed a motion to extend voting by 60 minutes in two Durham County precincts.

Earlier in the day a number of Durham precincts had technical issues with their electronic poll books, which are used to check in voters at the polling place.

For the sake of uniformity, Durham County requested a 90-minute extension for all eight precincts that experienced interruptions in voting.

Voting was extended in six other Durham County precincts by the exact amount of time that they were delayed, ranging from 20 minutes to 45 minutes.

The state board voted 3-2, with dissenters arguing that the state should grant the two counties where voting was extended by 60 minutes on top of the delay times. Those who voted in favor said they did not want to force workers to stay into the night and didn't want to hold up the entire state process because of on one or two precincts.

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