All across America, politicians are racing to legalize mobile sports betting. Since the Supreme Court struck down a law preventing sports wagering beyond Nevada four years ago, more than half of all states have permitted betting on sports, with 21 making it legal to wager online. Making sports betting legal has been a rare bipartisan cause: Republican- and Democrat-run legislatures alike have pursued it with almost equal zeal.

Of late, it’s been Democrats at the vanguard. Stacey Abrams, making her second run for governor of Georgia, has attacked Brian Kemp, the Republican incumbent, for not yet allowing sports betting in the state, timing her TV spots to the start of college-football season. The Democratic governors of Pennsylvania, Michigan, Illinois, New Jersey, and Connecticut have all legalized online betting.