A federal court refused late Friday to block a congressional redistricting map it drew up for Texas, rejecting a request from the state's attorney general just hours after the Republican accused the court of "undermining the democratic process."

Texas Attorney General Greg Abbott had asked the San Antonio-based court to stay the implementation of its interim map, which the court drafted when minority groups challenged the original plan passed by the Republican-dominated state Legislature.

The court-drawn map would ensure minorities made up the majority in three additional Texas congressional districts. If the 2012 elections were held under the court's map, Democrats would have an advantage as they try to win back the U.S. House.

Abbott said he would appeal to the U.S. Supreme Court. The court-ordered map will remain in place until the legal fights are resolved.

The court drew the maps after minority groups filed a lawsuit, claiming a redistricting plan devised by Republican lawmakers didn't reflect growth in the state's Hispanic and black populations.