Legislation to give the District of Columbia a full vote in the House of Representatives stalled when Republicans unexpectedly injected the volatile issue of gun control. Democrats decided to put off action indefinitely on the voting rights measure, which had appeared to be moving toward passage though President Bush had vowed to veto it. Republicans, protesting the delay, sought a quick vote on their effort to repeal the District's ban on handguns. Mayor Adrian M. Fenty said there was no local support for repeal of its tough gun-control laws. He said that when people learned that residents had again been denied voting rights, ''I think it is going to backfire on those who have done this procedural maneuver.''
