SAN DIEGO (CNS) - The San Diego County Board of Supervisors Tuesday tentatively passed a redistricting ordinance which adjusts the boundaries of the areas its members represent.

The measure unanimously approved on first reading -- a final vote is set in two weeks -- includes an adjustment from a map approved last week -- placing all of Barrio Logan in District 1, currently represented by Supervisor Greg Cox. The map originally had the community split between two districts.

Legislative districts are redrawn every 10 years in accordance with updated census data, and have to satisfy a number of legal requirements.

"All in all, we have a map that is certainly in compliance with the Voting Rights Act of 1965," Cox said. "It's one that reaches, I think, a good balance for each of the supervisorial districts."

The map has five districts with total populations ranging from 608,340 to 627,639 and creates one district, Cox's, that is one-third white in its voting-age population.

The ordinance, once approved, will authorize the Registrar of Voters to prepare maps and election files for the June 5, 2012, primary and notify registered voters whose districts have changed.