Colorado voters have narrowly approved a ballot measure to regulate sports betting.

The ballot saw 51.1 per cent of votes go in favour of the measure and 48.8 per cent against, with 1,479,935 votes cast.

Colorado Governor Jared Polis signed legislation in May to legalise sports betting, subject to voter approval at the November 5th general election.

The legislation allows the existing casinos in Central City, Black Hawk, and Cripple Creek to offer retail and online sports betting, with the state receiving 10 per cent of the net proceeds to fund implementation of the state water plan.

Colorado becomes the 19th US state or district to legalise sports betting since the repeal of PASPA in May 2018. The others are Arkansas, Delaware, District of Columbia, Illinois, Indiana, Iowa, Mississippi, Montana, Nevada, New Hampshire, New Jersey, New York, North Carolina, Oregon, Pennsylvania, Rhode Island, Tennessee, and West Virginia.

Colorado’s sports betting legislation decriminalises the activity as of May 1st, 2020.