LITTLE ROCK, Ark. — Operators of Arkansas’ two racetracks that allow electronic gambling gave more than $100,000 last month to a committee fighting a proposed constitutional amendment that would legalize casinos in three counties.

An August campaign finance report from the Committee to Protect Arkansas’ Values/Stop Casinos Now shows that Oaklawn Racing and Gaming gave $59,500 to the committee. New York-based Delaware North, which owns Southland Park Gaming and Racing, gave $50,000.

Groups backing the measure have not yet filed August finance reports. But in June, Cherokee Nation Businesses — which would operate a Washington County casino if the measure passes — gave $1 million to the effort.

Also Thursday, Gov. Asa Hutchinson appointed Warren Dupwe of Jonesboro to serve as special justice in a case before the Arkansas Supreme Court challenging the measure.