PHOENIX (AP) — Gov. Jan Brewer’s veto of a bill allowing businesses to refuse service to gays exposed a fracture within the Republican Party between social conservatives and the GOP’s pro-business wing, a split that Democrats hope to turn into a midterm election campaign issue.

The Republican governor has made job creation and business expansion the centerpiece of her administration, and she was more than willing to disregard the wishes of social conservatives amid protests from major corporations such as American Airlines and Apple Inc. As a result, the GOP base was left dispirited, and opponents of gay marriage are struggling to find their footing after significant losses in the courts and statehouses.