It may be a lost cause at this point, but Oakland’s political leaders and baseball fans are not letting the A’s go to Las Vegas without fighting until the bitter end.

With Major League Baseball set to vote next week on the A’s proposed relocation amid high expectations of approval, the club’s hometown since 1968 is still trying to change minds.

Oakland mayor Sheng Thao, who has battled for months with league officials, wrote team owners detailing how the more than $900 million in proposed public-sector assistance for a new ballpark in Oakland would nearly triple the $380 million in taxpayer funds pledged in Las Vegas, now the subject of a potential referendum.