Warren County has seen an 18 percent drop in the number of active registered voters on the voting rolls heading into Tuesday’s primary elections, a routine update showed.

Active registered voters listed by the Secretary of State’s Office for Vicksburg and Warren County is 30,306 — about 18 percent fewer than the 2008 general election, a ballot headlined by the presidential race between Barack Obama and John McCain. Voter turnout set a local record for that election, in terms of total ballots cast.

Rolls are routinely purged during each election cycle to reflect names deemed inactive for a number of reasons, most commonly because they have either moved or died.