The Democratic congressional redistricting plan, which could help determine U.S. representative districts, was introduced on the floor after it passed the House redistricting committee by a 26-11 committee vote earlier in the day.
The plan received support from a coalition that consisted of the majority of the Democrats in the chamber and 14 House Republicans.
A second House vote is required before the congressional redistricting plan moves to the N.C. Senate. The vote is scheduled to take place Thursday.
Both chambers have to approve identical plans before the proposal can become law.
Rep. Mary Jarrell, D-Guilford, said she expects Wednesday's results to be upheld in the second vote.
"People's minds are made up, and that's usually how they vote," Jarrell said.
Rep. Stanley Fox, D-Granville, also said he does not expect the number of those in favor of the current plan to change significantly.
Fox said the current plan is a product of compromise on the part of both Democrats and Republicans. He said tension in committee between the two parties was minimal and that he felt all members had an equal opportunity to contribute to discussion.
"The debate was open in committee, and everybody got a chance to put in amendments, to debate and to discuss," Fox said.