Voters head to the polls Tuesday in Maryland, Utah, and New York for primary elections, while South Carolina holds a Republican run-off that could reshape the state's political landscape. Redistricting takes center stage in the Utah and Maryland Democratic primaries, where newly drawn maps have intensified competition and shifted the electoral calculus.

In Maryland, Democratic contests for Congress and state legislature are being fought on maps that redrew boundaries after the 2020 census, potentially altering the balance of power in the delegation. Utah's Democratic primary similarly reflects the impact of redistricting, with candidates vying for advantage in reconfigured districts. These races offer an early test of how new lines influence voter behavior and party strategy.

New York's primaries include a closely watched Democratic matchup in the 19th Congressional District, a swing seat that could determine control of the House. South Carolina's second congressional district sees a Republican run-off between incumbent Representative Joe Wilson and challenger Michael G. Sampson, a race that will test the influence of anti-incumbent sentiment.

The outcomes will signal the political mood ahead of the November general election, particularly regarding the durability of redistricting advantages. Analysts will scrutinize turnout and margin shifts to gauge whether the new maps favor Democrats or Republicans in the long run.