Elena Moore | KUNC

Elena Moore

Elena Moore is an editorial assistant for NPR's Washington Desk working as the researcher for the 2020 campaign. She previously worked at NBC News and is also a proud former Washington Desk intern. Moore is a graduate from The George Washington University in Washington, D.C., and is originally from Brooklyn, N.Y.

Mail-in voting, which tens of millions of Americans are expected to use this November, is fraught with potential problems. Hundreds of thousands of ballots go uncounted each year because people make mistakes, such as forgetting to sign the form or sending it in too late.

Progressives are mounting efforts to best establishment Democrats in Kentucky and New York Tuesday.

Black Lives Matter protests around the country have added energy to the left, and Black progressives are surging in contests in both states.

In Kentucky, the race between the two leading Democrats vying for the right to likely take on Republican Senate Majority Leader Mitch McConnell is coming down to the wire. All the momentum is on the side of state Rep. Charles Booker over Amy McGrath, a retired Marine fighter pilot with a lot of money and the party's backing.

Former Georgia gubernatorial candidate Stacey Abrams says the state's Tuesday primary performance was "an unmitigated disaster," pinning the blame on Georgia's Secretary of State Brad Raffensperger.

Polling locations all around Georgia experienced delays and long lines Tuesday due to a mix of logistical problems, technical issues with the state's new voting machines and COVID-19-related restrictions resulting in fewer available voting sites.

Jaylan Scott was in the middle of planning an upcoming event for the Young Democrats of Georgia when he found out his state's primary was postponed.

"It was pretty much a shocker for me," the Georgia State University sophomore said. "It was a shocker for everybody."

Scott first voted in the 2018 midterm elections but has yet to participate in a presidential election. He's a supporter of Vermont Sen. Bernie Sanders, but says he'll vote for former Vice President Joe Biden if he is the Democratic nominee.

Updated at 11:35 a.m. ET

Former Vice President Joe Biden won the most delegates in Tuesday night's voting, widening his lead over Vermont Sen. Bernie Sanders in the race for the Democratic presidential nomination.

Three days before the Nevada caucuses, six Democratic candidates will face off in a debate Wednesday night in Las Vegas.

The televised debate comes on the heels of a new NPR/PBS NewsHour/Marist Poll that shows Vermont Sen. Bernie Sanders leading nationally, with 31% support among Democratic-leaning voters.

Trailing Sanders in second in the survey is billionaire and former New York City Mayor Michael Bloomberg, with 19% backing.

Editor's note: Live special coverage for this event has ended.

Seven Democratic candidates took the stage Thursday night to participate in the sixth and final primary debate of the year, hosted by PBS NewsHour and Politico.

NPR hosted live audio coverage of the debate online and on many public radio stations.

Read NPR's live online analysis here.