A federal court in the nation’s capital requested more information Tuesday about a Central Texas congressional district, a move that could delay the primary elections in Texas once again. In the ongoing redistricting saga, the Washington, D.C., court asked for briefs by March 13 on Congressional District 25, currently represented by U.S. Rep. Lloyd Doggett, D-Austin. The three-judge panel seems to be struggling with a contentious issue that has divided plaintiffs’ groups suing the state in a San Antonio federal court over redistricting maps drawn by the Legislature last year; the plaintiffs say the maps are racially and ethnically discriminatory. At issue is whether District 25 is a minority district protected by the Voting Rights Act or a white district that would not require protection. Some plaintiffs in the redistricting fight argue that Hispanics and blacks join with whites in District 25 to elect a candidate of their choice, while other plaintiffs say it is a majority Anglo district that has long elected Doggett, a white Democrat.