LITTLE ROCK — Supporters of a plan to legalize casinos in Arkansas have submitted thousands of additional signatures to try and get their proposal on the November ballot.

Driving Arkansas Forward on Tuesday submitted 43,952 signatures to the secretary of state’s office for the proposed constitutional amendment the group is advocating.

The proposal would expand casino gambling at a Hot Springs horse track and a West Memphis dog track. It would also legalize casinos in Pope and Jefferson counties.

The group was given 30 additional days last month to gather signatures after it fell short of the nearly 85,000 signatures from registered voters needed to qualify for the ballot. Officials last month said the group had submitted 70,054 valid signatures.

Don Tilton, an Arkansas lobbyist who is representing the Quapaw tribe, which is a substantial financial backer of the proposed Jefferson County casino, said in July that “any of our financial interests moving forward, if we were selected as the entity to own and operate a casino in Jefferson County, any of those interests are represented within the City of Pine Bluff.”

Tilton responded last month to several rumors that the proposed casino would be located outside of Pine Bluff but still in Jefferson County. Details are not being released regarding the exact proposed location.

Tilton said the group has done “very well at gathering signatures. It is our belief that we will meet the thresholds in order for the secretary of state to respond and say we have met the requirements.”