Benjamin Swasey

Updated at 3:19 p.m. ET

National convention planning for Republicans and Democrats continued to evolve on Wednesday, as the parties try to adapt their nominating events, which are typically filled with throngs of people, to the realities of the ongoing pandemic.

Updated at 8:41 a.m. ET

Cori Bush, a nurse and Black Lives Matter activist, has ousted longtime Missouri U.S. Rep. William Lacy Clay in a Democratic primary, according to The Associated Press.

It's the latest example of a progressive challenger topping a long-tenured Democratic incumbent.

Voters head to the polls in a handful of states Tuesday, in the latest tests of voting systems stressed by the ongoing pandemic.

Updated at 4:48 p.m. ET

A video shared by President Trump on Twitter Sunday includes a man who appears to be a Trump supporter saying "white power" in response to protesters.

In the video, apparently taken at The Villages, a retirement community in Florida, people wearing Trump shirts and with Trump signs on their golf carts drive by protesters yelling insults at them and about the president.

Updated at 7:27 p.m. ET

As overlapping crises convulse an anxious nation, President Trump on Sunday sought to cast blame for widespread protests gripping cities on "radical-left anarchists," while adding that the media "is doing everything within their power to foment hatred and anarchy."

Updated on April 23 at 8:20 a.m. ET

A high-ranking federal scientist focused on vaccine development says he was removed from his post because of his "insistence" that the government spend funds on "safe and scientifically vetted solutions" to address the coronavirus crisis and not on "drugs, vaccines and other technologies that lack scientific merit."

Updated at 11:45 a.m. ET Tuesday

Joe Biden has won the Wisconsin Democratic primary, garnering 63% of the vote.

The former vice president was already the party's presumptive presidential nominee, after Vermont Sen. Bernie Sanders suspended his campaign last week.

Sanders formally endorsed Biden on Monday.

Updated at 4:27 p.m. ET

Vermont Sen. Bernie Sanders officially endorsed his former rival, former Vice President Joe Biden, on Monday.

Sanders, who suspended his campaign last week, had long said he'd support whoever won the Democratic nomination, but he did not formally endorse Biden when he announced an end to his own run on Wednesday.

Sanders made the announcement as he remotely joined Biden on a livestream video.

Updated at 9:37 p.m. ET

Amid the coronavirus pandemic, Wisconsin's statewide election drew to a close Tuesday evening after an 11th-hour scramble, long, socially-distanced lines at the polls, jury-rigged safety Plexiglass barriers, masks, cleaning supplies and a taunt directed at Wisconsin Gov. Tony Evers by President Trump.