What to Watch in Tuesday’s Primaries in Nebraska and West Virginia

Democrats will choose a candidate in a House battleground in Nebraska that could decide the fate of Omaha’s “blue dot” vote.

Virginia Officials Ask Supreme Court to Restore Voting Map Drawn by Democrats

State officials asked the justices to overturn a Virginia Supreme Court decision that struck down a congressional map, a major defeat for Democrats.

How Nebraska’s ‘Blue Dot’ Roiled a Democratic House Primary

A speck of blue on an otherwise red area in some presidential elections, the dot is now dividing candidates in a key midterm contest.

Alabama Asks Supreme Court to Allow it to Use New Voting Map

State officials urged the justices to allow them to jettison Alabama’s congressional district map, citing the Supreme Court’s recent decision that dealt a blow to the Voting Rights Act.

Supreme Court Strikes Down Louisiana Map, Another Blow to Voting Rights Act

The court struck down the voting map as an unconstitutional racial gerrymander in a move that could make it harder for lawmakers to create majority-minority voting districts.

Every Black Republican Is Leaving the House, Erasing Diversity Gains

All four Black House Republicans are retiring after this year, a reflection of the striking and persistent lack of diversity in the G.O.P. ranks of Congress.

Younger Democratic Candidates Bring New Energy, but Also New Risks

A youth movement in Iowa is aiming to appeal to voters who have abandoned Democrats in the Trump era. There are pitfalls for people who grew up sharing everything online.

Proposed Medicaid Cuts Put Vulnerable Republicans in a Political Bind

G.O.P. lawmakers from swing districts face tough votes as soon as next week, when key House panels are scheduled to consider legislation that would cut popular programs to pay for President Trump’s agenda.

David Hogg, Parkland Survivor and D.N.C. Vice Chair, Hopes to Unseat Democratic Incumbents

David Hogg, a young liberal activist and now a vice chair of the Democratic National Committee, is leading an effort to unseat the party’s older lawmakers in primaries.