The precedent has been set by none other than the democrats. Time and time again, democratic leaders to include Obama, Biden, and Schumer were quoted as saying the republican president should not appoint a new SCOTUS. And with W is was with 18 months left. With Obama it's already an election year with some primaries already behind us. He is a lame duck and should let the people decide the direction of the country by waiting until the new president is elected by year's end. The world will not end, the government will not lose control, and life will go on as always without a 9th judge for less than a year. This precedent has been set time and time again dating back to the 1800s. If he truly cares more about the concerns and desires of the American people over his own legacy, he has a moral obligation to not try to appoint a new Justice.