How Obamacare Could Save Alison Lundergan Grimes

Most polls show Alison Lundergan Grimes trailing Senate Minority Leader Mitch McConnell in Kentucky's closely watched Senate race. But a secret weapon for Grimes may be something she struggled to embrace for most of her campaign: Obamacare.

More than 413,000 people in Kentucky have obtained health insurance thanks to Kynect, the state's adaptation of the Affordable Care Act. About 330,000 residents received insurance under the law's Medicaid expansion, while more than 82,000 have purchased insurance through Kynect's insurance exchange. For a lightly populated state like Kentucky, those are numbers with...