Democrats stake their House majority on abortion

From rural Wisconsin Trump country to California’s heavily Catholic Central Valley, there’s almost no place where Democrats think an abortion rights-focused message won’t play — and they are betting their House majority on it.

Democratic candidates, their party’s campaign arm and allied super PACs have spent nearly $18 million to air more than 100 abortion-centered broadcast TV ads in some four dozen battleground seats as of the end of September, according to a POLITICO analysis of data from AdImpact, a media tracking firm. That sum is already three times more...