PORTLAND  — Casino opponents are seeking a recount in last week’s election in which Mainers gave their approval for the state’s first casino with both table games and slot machines.

Scott Vlaun of Oxford Hills No on One, an anti-casino group, told The Associated Press that petitions with about 150 signatures are being delivered to the secretary of state’s office. The deadline for seeking a recount is 5 p.m. Tuesday.

Vlaun said the election’s voting margin was so close that the group felt obligated to seek a recount. Voters approved the referendum allowing a casino in the western Maine town of Oxford by 5,264 votes.

Another anti-casino group, Citizens Against the Oxford Casino, is not seeking a recount.