What to Watch in Tuesday’s Primaries

Voters in Alabama and Georgia will make their final selections on Tuesday in congressional runoffs — including a particularly hard-fought battle for the Senate in Alabama

and Virginia primary voters will select party nominees for two of the most closely watched House races in the country. Here is what to watch for on a Southern-accented Primary Day.

The end of the line for Mo Brooks? Republican voters in Alabama could be forgiven for their confusion over their party’s nominee for an open Senate seat. 

Former President Donald J. Trump, a popular figure in the state, endorsed Representative Mo Brooks for the job after he emerged as an unwavering acolyte and a stalwart supporter of Mr. Trump’s election falsehoods.

The former president then withdrew his endorsement as Mr. Brooks lagged in the polls, and finally threw his support to Katie Britt, a former chief of staff for Senator Richard Shelby, who is retiring.

On Tuesday, Ms. Britt and Mr. Brooks meet in a runoff that will determine the prohibitive favorite to become Alabama’s next senator. Recent polling indicated Ms. Britt has a commanding lead.

It’s MAGA vs. the G.O.P. mainstream in Virginia’s Second District. The special masters who drew up Virginia’s new House districts dealt a very bad hand to one incumbent: Representative Elaine Luria, a Democrat.

Her home in Norfolk was removed from her Tidewater district, and a good deal of rural terrain was added to the seat. Once slightly Republican, her district, Virginia’s Second, became considerably more so.

The two main Republicans vying to take her on are State Senator Jen Kiggans, who has the backing of Republican leadership in Washington, and Jarome Bell, who has the backing of the state congressional delegation’s most conservative Republican, Bob Good, and members of the Trump world.

Ms. Kiggans, Mr. Bell and Ms. Luria are all Navy veterans in a district where one in five voters are on active duty in the military or are veterans. What separates the three is ideology, with Mr. Bell campaigning on Mr. Trump’s false claims of election fraud.