WASHINGTON (AP) — Hit with a multimillion-dollar barrage of televised attacks, Democrats in tough re-election races want credit for trying to fix the problematic parts of the health care law at the same time they claim bragging rights for its popular provisions and allege Republicans will reverse the crackdown on insurance company abuses.

It’s a tricky, high-stakes political straddle by lawmakers who voted to create the law, which Republicans intend to place at the center of their campaign to win control of the Senate and hold their House majority.