I'm with TLDR20 on this one. As much as I hate to see an Obama administration appointee, Obama has every right to nominate a candidate and have him evaluated fairly by the Senate. For the Senate to mothball Obama's nomination without fair evaluation purely for the purpose to wait and see if their guy gets in office to appoint a new Justice is an insult to the Constitution.
I disagree with this, as only one Senator is elected at a time from any given state, and frequently, voters in any state must wait 4 years to elect a Senator, so the Senate does not necessarily accurately reflect the public's exact political views at any given point in time. It is just as bad in the House due to gerrymandering of districts. I don't have the exact numbers, but we spoke of this issue in class. 50 years ago, the parties had roughly a 35% turnover rate of controlling party of a district while today the number is roughly 7%. You can just look at Louisiana's only blue district to see that the districts weren't just thrown together.