Republicans are already maneuvering to find a way to avoid having to vote on an Obama lame duck Supreme Court nominee. The body was still warm when the Senate Majority Leader was already calling for a suspension of the Constitution in order to prevent Obama from nominating a replacement for Scalia.

Conservatives are all for a strict interpretation of the Constitution except for when it is inconvenient for them (like when it applies to abortions or anchor babies). There is absolutely no constitutional, “traditional”, “customary”, historical or procedural precedent for this. Its purely and shamelessly political on their part.
The Republicans are not expressing displeasure with Obama’s appointment, they are in principle opposed to him appointing anybody; sight unseen.

They point to there having been only one lame duck SCOTUS appointment in 80 years, but that is just statistics and probability. There have been 49 Supreme Court appointments in the last 100 years, under 16 presidents, and since appointments are for life and justices serve a long time, not too many appointments will fall on a known final year of a Presidency. Presidents who resign or die in office cannot be said to have a lame duck year. If you look up the history, their reasoning unravels. There have been 14 Supreme Court appointments in election years, particularly in the early years of the Republic, when lifespans were shorter than they are today.

https://en.wikipedia.org/wiki/List_of_nominations_to_the_Supreme_Court_of_the_United_States

http://www.vox.com/2016/2/13/10987692/14-supreme-court-confirmations

No, they are just trying to save themselves from the embarrassment of the Dreaded Socialist Muslim Kenyan Makaka appointing another liberal to the Court. But that is not only his right, it is his obligation. That’s why the people elected him, twice. If the Republicans want to prevent Obama from doing so, they are just going to have to risk the political consequences and simply refuse to confirm him in the Senate, under the full scrutiny of the American people (and the Lamestream Media). Of course, it won’t be the first legitimate Obama judicial (or agency) appointment they have blocked by refusing to act on it in order to obstruct the President from doing his job.

The GOP is certainly entitled to block any Obama appointment in the Senate, but to do so would expose them to public review. The people would have the opportunity to judge their motives. It would be impossible to deny that they were obstructing a Presidential action merely to embarrass or frustrate him, regardless of what the collateral damages to the nation were. Obstructionism? Blackmail? Extortion? Sabotage? Treason? This is cynicism and treachery on an unprecedented and galactic scale.