MIAMI — The Florida judge who ruled last month that two of the state’s congressional districts were illegally drawn to favor Republicans issued a new court ruling Friday, this time admitting that he was unsure how to resolve the problem by November’s election.

Judge Terry P. Lewis of Leon County gave the State Legislature two weeks to submit a new proposed congressional map to replace the gerrymandered boundaries of the Fifth and 10th Congressional Districts, which he had already ruled unconstitutional. Admitting that law and logistics could prove formidable obstacles, he postponed his decision on whether to delay the November 2014 general elections, putting the future of those congressional races and those closest to them in doubt.

His decision drew a strong rebuke from one of the House representatives whose district would be redrawn, who said the ruling and the movement to end gerrymandering was a deliberate attack on African-American representation.

“I personally think that what the judge is recommending is illegal, and needs to be dealt with,” Representative Corrine Brown said in an interview. “What he is doing is throwing our state into chaos. I don’t support that.”