Even with Obamacare repeal in the rearview mirror (for now), the defining issue for many voters in 2018 is health care.
No issue has mobilized Democrats more, after Republicans tried to repeal the Affordable Care Act last year. Polling from the Pew Research Center, Kaiser Family Foundation, and others has shown health care is arguably the top issue for voters this year. It has become a staple of Democrats' campaigns across the country — from progressive enclaves where running on single-payer health care boosts turnout to red-tinted states that voted for Trump, where vulnerable Democrats are leaning into the protections for preexisting conditions embedded in Obamacare.
