"State officials say they are confident that electronic pulltabs in bars and restaurants could generate $72 million annually -- enough to fund the state's share of a proposed Minnesota Vikings stadium.

Revenue Commissioner Myron Frans said on Tuesday that the latest projection relies on different calculations than an earlier estimate that put likely revenues at less than $40 million, because they also included tax relief for the charitable gambling industry.

A legislative stadium working group, which met with Frans late on Monday at a St. Paul restaurant, has tentatively endorsed using electronic pulltabs as a way to provide $340 million toward the state's share of a stadium, projected to cost at least $900 million.

Frans said the enhanced revenue estimate was the result of additional research. "We've just done more and more research," he said. "Every month that goes by, you learn more.""