Alabama voters in several congressional districts returned to the polls Tuesday for a second primary election, months after the state redrew its congressional maps in May. The unusual August primary follows the redistricting process that shifted district boundaries and created new electoral matchups.

The delayed primary affects voters in multiple districts who already participated in an earlier round of voting before the maps were redrawn. State officials pushed the affected primaries to August to allow time for the new district lines to take effect and for candidates to file in their newly configured districts.

Election officials have expressed concern that confusion over the two-primary system could suppress voter turnout. Many voters may not realize they need to vote again, or may be unclear about whether their district is among those holding the August contest. The compressed timeline between the map redraw and the second primary has also limited opportunities for voter education and outreach.

The redistricting came after legal challenges to Alabama's previous congressional maps. The May redraw reshaped several districts across the state, requiring a reset of the primary process for those areas. Voters who cast ballots in the original primary will see different district configurations and potentially different candidate options on their August ballots.

Turnout figures from Tuesday's voting will indicate whether the concerns about voter confusion materialized. The winners of the second primary will advance to the general election in November, joining candidates from districts that completed their primaries earlier in the year. Alabama election officials have not indicated whether measures will be implemented to prevent similar two-primary situations in future redistricting cycles.