May 2016: A
John McCain reelection
campaign ad, airing in Arizona:

“John McCain is leading the fight to stop Obamacare.” Plenty of other McCain ads and campaign events and messaging pointed to stopping Obamacare as a big reason, perhaps the biggest reason, Arizonans needed to return him to the Senate.
Published on Sep 17, 2016
John McCain's plan to repeal and replace Obamacare: http://www.johnmccain.com/john-mccain...
McCain
made his choice: Sen. John McCain torpedoes Republican
health-care effort, kills 'skinny repeal' bill Sen. John McCain cast
the deciding vote to sink his fellow Republicans’ so-called “skinny repeal” of
the Affordable Care Act. McCain, R-Ariz., joined Republican Sens. Susan Collins
of Maine and Lisa Murkowski of Alaska and every Senate Democrat to bring down
the bill on a 49-51 vote.