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Photo: Joshua Lott/Getty Images

Former Vice President Joe Biden's campaign is demanding answers from the Iowa Democratic Party over technology "quality control" issues that have delayed caucus results.

What they're saying: "[W]e believe that the campaigns deserve full explanations and relevant information regarding the methods of quality control you are employing, and an opportunity to respond, before any official results are released."

Catch up quick: Organizational and technical problems with precinct reporting are expected to significantly delay the Iowa caucuses' results.

Read the letter here:

Go deeper: Iowa Democrats hang up on precinct chair while he's live on CNN

Go deeper

Updated 20 mins ago - Sports

Simone Biles won't compete in individual vault or uneven bars Olympic finals

Photo: Loic Venance/AFP via Getty Images

Simone Biles will not compete in the individual vault or uneven bars finals at the Tokyo Olympics, USA Gymnastics announced Friday.

Why it matters: USA Gymnastics said Biles, who previously withdrew from the individual all-around and team finals to prioritize her mental health, will continue to be evaluated to determine if she'll compete in the balance beam or floor exercise events.

37 mins ago - Sports

American Katie Ledecky wins Olympic gold in women's 800m freestyle

Photo: François-Xavier Marit/AFP via Getty Images

American superstar swimmer Katie Ledecky grabbed her second gold medal of this year's Olympic Games, winning the women's 800-meter freestyle race Saturday in Tokyo.

Driving the news: Ledecky, who holds the world record in the 800m freestyle, is considered one of the best women swimmers of all time. Earlier this week, she snagged gold in the first-ever women's 1500m freestyle and took home silver medals in the 400m freestyle and the 4x2100m freestyle relay.

49 mins ago - Sports

Caeleb Dressel breaks world record in men's 100m butterfly, wins 3rd gold in Tokyo

Photo: Jean Catuffe/Getty Images

American swimmer Caeleb Dressel broke the world record in the men's 100-meter butterfly final in Tokyo on Saturday, picking up his third gold medal of this year's Games.

The big picture: Dressel finished with a time of 49.45 seconds. Hungary's Kristóf Milák won the silver, and Switzerland's Noe Ponti took the bronze.

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