I think this story will be the biggest one of the election season. There are so many factors in play and so much at stake, it will be fascinating how it all plays out. Here are my bullet points: 1) Rare. Presidents are rarely presented with opportunity to make a Supreme Court nomination in an election year. Further, this vacancy has occurred in the eighth year of Obama's presidency, meaning he is not going to be on the ballot and that has been known since November of 2012. 2) Legacy. Obama will be making his third Supreme Court appointment. Not many get that opportunity and this appointee (if confirmed) would switch the ideological composition of the court from quite conservative to moderate or even a bit left-leaning. If this nominee is approved, Obama may well have a couple justices on the Supreme Court until the middle of this century. 3) Unprecedented. No Supreme Court nominee has ever been denied a hearing and every nominee has either been confirmed or denied within 135 days. Republicans are proposing that Obama's nominee not be considered at all. If the Republicans hold firm, we will have a precedent virtually outlawing Supreme Court nominations in the last year of a president's term if the opposition party has the majority. 4) Effect on the election. If Obama's choice is viewed as a competent and qualified jurist, the Republican presidential candidate will have another issue working against him. Further, many vulnerable Senators would have this issue raised against them. This could certainly be the issue that flips the US Senate back to the Democrats in 2016. 5) GOP Implosion. Again a competent and qualified nominee will leave Republicans in a no-win scenario. Hard-core conservatives and Obama-haters will fight any nominee, while moderates and those trying to win an election in purple or blue states will be inclined to consider or perhaps approve the yet-unnamed nominee. Republicans are already close to civil war, this issue could put their fracture in front of everyone.