United States presidential election

In this June 13, 2019, photo, Steve Marcinkus, an Investigator with the Office of the City Commissioners, demonstrates the ExpressVote XL voting machine at the Reading Terminal Market in Philadelphia. An analysis by The Associated Press has found that the vast majority of the nation’s 10,000 election jurisdictions will be managing their elections on Windows 7 or an even older operating system. (AP Photo/Matt Rourke)

FILE - In this June 27, 2019, file photo, Democratic presidential candidate South Bend Mayor Pete Buttigieg, left, speaks as former vice president Joe Biden gestures during the Democratic primary debate hosted by NBC News at the Adrienne Arsht Center for the Performing Art in Miami. Biden and Buttigieg represent the generational poles of the crowded Democratic presidential primary. Biden is hoping Democratic voters see his decades of experience as the remedy for Trump's presidency. Buttigieg argues that the moment calls for the energy of a new generation. (AP Photo/Wilfredo Lee, File)

FILE - In this June 27, 2019, file photo, Democratic presidential candidate South Bend Mayor Pete Buttigieg, left, speaks as former vice president Joe Biden gestures during the Democratic primary debate hosted by NBC News at the Adrienne Arsht Center for the Performing Art in Miami. Biden and Buttigieg represent the generational poles of the crowded Democratic presidential primary. Biden is hoping Democratic voters see his decades of experience as the remedy for Trump's presidency. Buttigieg argues that the moment calls for the energy of a new generation. (AP Photo/Wilfredo Lee, File)

FILE - In this May 18, 2019, file photo, Rep. Ilhan Omar, D-Minn., speaks during the fourth annual Citywide Iftar Dinner in Austin, Texas. In tweets Sunday, President Donald Trump portrays the lawmakers as foreign-born troublemakers who should go back to their home countries. In fact, the lawmakers, except one, were born in the U.S. He didn’t identify the women but was referring to Reps. Alexandria Ocasio-Cortez, Ilhan Omar, Ayanna Pressley and Rashida Tlaib. (Nick Wagner/Austin American-Statesman via AP, File)

In this June 13, 2019, photo, Steve Marcinkus, an Investigator with the Office of the City Commissioners, demonstrates the ExpressVote XL voting machine at the Reading Terminal Market in Philadelphia. An analysis by The Associated Press has found that the vast majority of the nation’s 10,000 election jurisdictions will be managing their elections on Windows 7 or an even older operating system. (AP Photo/Matt Rourke)

FILE - In this Saturday, April 27, 2019, file photo, National Rifle Association Executive Vice President Wayne LaPierre speaks at the NRA Annual Meeting of Members in Indianapolis. Former NRA President Oliver North says in court filings that he was thwarted at every step as he tried to raise alarm bells about alleged misspending at the gun lobbying group. He denied that he had tried to stage a coup to oust LaPierre. (AP Photo/Michael Conroy, File)

President Donald Trump speaks during an event about the census in the Rose Garden at the White House in Washington, Thursday, July 11, 2019. (AP Photo/Carolyn Kaster)

FILE - In this June 27, 2019, file photo, House Speaker Nancy Pelosi of Calif., speaks during her weekly media availability on Capitol Hill in Washington. They don’t talk to each other much, Pelosi and Rep. Alexandria Ocasio-Cortez — but they certainly speak past one another, in a very public way that now threatens the House agenda. (AP Photo/Alex Brandon, File)