Election security updates: CISA says election saw only 'minor' disruptive activities

The Navajo Nation Department of Justice has filed suit against Apache County, Arizona, requesting an extension of voting hours due to polling place issues.

The suit alleges that some locations in Apache County ran out of emergency ballots, that some voters were turned away due to ballot printer issues, and that some voters were forced to leave due to long lines at the polls.

"Defendants know or reasonably can be expected to know that their conduct of failing to timely conduct elections throughout the entire voting period at a polling site in Apache County has had the effect of severely burdening and in some cases, denying the right to vote for Plaintiff's members," the lawsuit says.

Earlier in the day, officials said the countywide issue was fixed but that it created some "residual issues" including long lines at the polls.

Arizona Secretary of State Adrian Fontes said he expects there will be a resolution before 7 p.m. MT -- which is when the polls are scheduled to close in Arizona.

-ABC News Laura Romero

Voters in Bethlehem, Pennsylvania, were waiting in line for as long as seven hours to cast their ballots at a polling location near Lehigh University, an official confirmed to ABC News.

The official -- Scott Hough, the vice chair of the Northampton County Election Commission -- said the wait was due to a broken voting machine in one precinct.

A judge denied Pennsylvania Democrats' request to keep this polling location open until 10 p.m., but will allow any voters who were in line at 8 p.m. to cast their ballots.

The state's Democratic Party petitioned the judge to grant the extension, arguing the Northampton County Board of Elections "has failed to provide sufficient voting machines and personnel to accommodate" voters.

"Long wait times resulting from inadequate equipment and personnel have caused electors to potentially be unable to vote within the time for opening and closing of polls," the petition stated.

-ABC News' Matt Gutman, Olivia Rubin and Devin Dwyer

Additional non-credible bomb threats were sent to polling locations in the Atlanta area, according to Georgia Secretary of State Brad Raffensperger, as a dozen counties remain open late due to threat-related evacuations earlier in the day.

"I know that in Atlanta, they just got a whole bunch of bomb threats coming through," Raffensperger said at a press briefing Tuesday evening. "All the precincts are staying open and they're just sending dogs around to sweep it to make sure they're safe."

"Best we can tell these would probably be coming from the same source," he added, referring to his earlier claim that Russia was behind the threats.

Raffensperger said 12 counties across the state are remaining open late due to threats to polling places: six in Dekalb, five in Fulton and one in Gwinnett.

Three additional counties will be open late due to "normal causes," he said.

A poll observer identified the error that resulted in Milwaukee officials' decision to rerun approximately 31,000 absentee ballots earlier today.

Milwaukee's top election official said that the city's election results will likely be reported in the "early morning hours" after an error at a central processing location forced a retabulation of those ballots.

Milwaukee Election Commission Director Paulina Gutierrez said the error was identified by a poll observer -- a member of the public who watches election officials for the sake of transparency.

The Trump campaign criticized Milwaukee election officials for the error.

"This is an unacceptable example of incompetent election administration in a key swing state: voters deserve better and we are unambiguously calling on Milwaukee's officials to do their jobs and count ballots quickly and effectively," RNC Chairman Michael Whatley and Co-Chair Lara Trump said in a statement.

"It's a human error," Gutierrez said. "That is the point of central county elections, is that it's transparent, and the observers brought it to our attention."