The Nov. 6 mid-term election included three ballot issues that were approved by voters.

Arkansas voters have approved a measure legalizing casinos in four counties, including at a horse track and dog track that already offer video poker and other electronic gambling.

Voters approved a constitutional amendment that allows the casinos at the Southland dog track in West Memphis and the Oaklawn horse track in Hot Springs.

The measure also legalizes casinos in Pope and Jefferson counties.

The Cherokee and Quapaw tribes in Oklahoma spent more than $4 million combined campaigning for the measure, which supporters have touted as a way to keep gambling revenue in Arkansas.

Tribe officials have said that the Jefferson County casino will be located in Pine Bluff.

The state Supreme Court last month rejected two lawsuits that tried to get the proposal disqualified from the ballot.

Arkansas voters also approved a plan to gradually raise the state's minimum wage from $8.50 an hour to $11.

Voters approved the proposed initiated act, which raises the state's minimum wage to $9.25 an hour on Jan. 1. The law then raises the wage to $10 an hour on Jan. 1, 2020, and $11 an hour on Jan. 1, 2021.

The state Supreme Court last month rejected a lawsuit from business groups who had challenged the signatures submitted in favor of the wage hike measure. The proposal is the second minimum wage hike increase Arkansas voters have approved over the past four years. Voters in 2014 approved a plan to gradually raise the state's previous minimum wage from $6.25 an hour.

In addition, voters added to the state's constitution a requirement that photo identification be shown in order to cast to a ballot.

The voter ID constitutional amendment was approved in Tuesday's election. The measure adds showing photo ID to the list of qualifications to vote in the state.

Arkansas already has a voter ID law in effect that was approved by the state's Republican-led Legislature and governor last year. The state Supreme Court last month upheld the measure and said the Legislature had the power to enact such a restriction.

The state Supreme Court in 2014 struck down a nearly identical version of the voter ID law that's now in effect.