"Haven’t Senate leaders been all over the map on whether to use the nuclear option?
Yes, they have. In November 2013, we gave McConnell, Reid and Obama full-flops for changing their positions on whether the nuclear option was desirable. Reid and Obama favored the change in 2013 even though they had opposed it in 2005 when they were members of a Senate minority. And McConnell was willing to use the maneuver when he was in the majority in 2005 but opposed it in 2013 when he was leading the minority."
How big a deal would it be if McConnell implements the nuclear option?
"By itself, the public relations impact of detonating the nuclear option could be significant, said Gregory Koger, a University of Miami political scientist. "It would be a landmark political event, highlighting to the country that the court has become a wholly political body staffed by ideologues," he said." 
Uh-Oh.
www.politifact.com/truth-o-meter/article/2017/feb/03/6-questions-answered-about-nuclear-option-filibust/