The right wing Justices do not care about the Affordable Care Act ("ACA"). The opposition was a surrogate for the hate Obama crowd, and rallied the idiot voters to the Tea Party and other empty-message candidates the Republicans put up. By contrast, the Justices are not running for office, and knocking out the ACA will not help serve any of the issues they do care about.
But if they stupidly invalidated any key provision that would end up costing millions of people heath coverage, that ruling would galvanize Democrats. It would create two, unbeatable issues for Democratic candidates to run on in 2016 that would motivate the millions of people who lost insurance, as well as their families and people who had no burning issue that would draw them to the polls until they began to wonder what other benefits will the Republicans conspire to take away from ordinary people?. The Democrats need say no more than:
:
The Republicans took away your heath care insurance; and the next President will be likely to shape the Supreme Court for the foreseeable future-Do you want a Republican President to be the one picking replacement Justices?
While I do not wish to see anyone knocked out of the ACA, a negative ruling by the Supreme Court would be like a gift of a magic wand to the Democrats.