If we could take a break from our poor winner/poor loser jeering and whining. . .
The Supremes may have done the Republicans a huge favor with the Obamacare decision and the gay marriage decision.
In American politics, convincing the uncommitted isn't the be-all and end-all. Equally, and perhaps more, important is getting your base, the ones who agree with you and will never change, up off their La-Z-Boys to write a check and actually show up at their polling place (assuming they can find it).
Outrage does that real well.
Because of these decisions, the right will be thumping the drum. and there will be a good number of right-wingers getting out to the polls who would otherwise just stay home because the Republican candidate isn't hateful enough to motivate them.
EDITED TO ADD: Before the whiners start whining, the left is equally ignorant, stupid, lazy, and poorly-motivated. However, being generally better at the internet, they have less trouble finding out where their polling places are.