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

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

Clay has represented the state's 1st Congressional District, around St. Louis, since 2001. He succeeded his father in representing the district.

Kansas Rep. Roger Marshall is projected to defeat former Kansas Secretary of State Kris Kobach in the Republican Senate primary, according to the Associated Press, calming Republicans' worst fears about putting a seat in a deep red state in play this fall with the Senate majority contested.

By Howard Fischer
Capitol Media Services

PHOENIX -- Arizona gyms and fitness centers could be open within a week.

In an extensive order, Maricopa County Superior Court Judge Timothy Thomason said he is not faulting Gov. Doug Ducey for his decision to shutter these facilities. He said the governor, based on medical advice he was getting, had a "rational basis'' for doing that.

THIS POST WILL BE UPDATED WITH THE LATEST INFORMATION ABOUT CORONAVIRUS IN ARIZONA AND YUMA AND LA PAZ COUNTIES.  Scroll down for more coverage and updates.

Watch the latest updates on the coronavirus pandemic, including regular White House briefings. 

WHAT WE KNOW:

Tuesday, Aug. 4

Six states led by a bipartisan group of governors are joining together in an effort to speed up coronavirus testing. As the nation's death count continues to rise above 150,000, the states said they will jointly purchase 3 million rapid antigen tests that can quickly detect the virus.

Rafael Nadal will skip this year's U.S. Open, the defending champion announced in a series of tweets on Tuesday, citing concerns over the coronavirus and his desire not to travel amid the pandemic.

An enormous explosion shook Beirut, Lebanon, on Tuesday. At least 70 people are dead and at least 2,700 people were hurt, according to Minister of Health Hamad Hassan. The death toll is expected to rise as officials search for people who have been reported missing.

Buildings collapsed and glass shattered as helicopters and firefighters doused the flames in the city's port. Hospitals were overwhelmed, and ambulances lined up to work on search-and-rescue operations.

Amnesty International says it has documented 125 separate instances of violence against protesters for racial justice in the U.S. over an 11-day period earlier this summer.

In a report published Tuesday, the human rights organization says that in the five years since 18-year-old Michael Brown was killed in Ferguson, Mo., "there has been a disturbing lack of progress ... in ensuring that police officers use lethal force only when there is an imminent risk of death or serious injury to themselves or others."