Opponents of Maryland's congressional redistricting map are hoping to submit enough signatures to put the map on the ballot to give voters a chance to reject it.

Antonio Campbell, president of Marylanders for Coherent and Fair Representation, says opponents plan to bring signatures to the Maryland Secretary of State's office in Annapolis on Saturday night to meet a midnight deadline.

Delegate Neil Parrot, R-Washington, says opponents of the map will be working hard on Saturday to try to meet the required threshold. The group needs to have 55,736 valid signatures to bring the map to a referendum. So far, the group has submitted 26,763 signatures to the Maryland State Board of Elections that have been validated.