Incoming Senate Minority Leader Chuck Schumer
Charles SchumerThe New York Times, other outlets crying 'wolf' over Trump Trump, Bannon, Sanders and Schumer could make deal of the century Trump calls Schumer 'cunning' in deleted tweet MORE (D-N.Y.) warned Sunday that Democrats would filibuster Donald Trump
Donald TrumpThe New York Times, other outlets crying 'wolf' over Trump NSA head: DNC hack didn't affect election outcome With Trump political disruption matters more than morality MORE's Supreme Court candidates if they are not "mainstream."
While Senate Majority Leader Mitch McConnell
Mitch McConnellDeficits could stand in the way of Trump's agenda Obama: Not worried about being last Democratic president Schumer threatens filibuster if Trump doesn't pick 'mainstream' court candidate MORE (R-Ky.) had suggested doing away with the filibuster, Schumer said Republicans "don't come with clean hands, having delayed Merrick Garland for a whole year."
President Obama nominated Garland to fill the vacancy left by the death of Antonin Scalia, but the Republican Senate blocked the nomination in hopes that a Republican would win the White House.
When Trump takes office in January, he will almost certainly appoint a conservative nominee to fill the vacancy.