If Obama loses in November and Ginsburg and Breyer immediately resign so that Obama can nominate their replacement, there is NO WAY that the Senate will vote to confirm prior to the new president being sworn in on January 20, 2013 (at which time the new president would surely remove the nominations and nominate two other candidates), much less before the new Senate (which will have a GOP majority) takes over on January 3, 2013. There are 47 Republicans in the Senate, and even with a few RINOs there, it is unfathomable that we would fail to get 41 of them to filibuster last-minute nominations by a defeated, lame-duck Democrat president.
If Ginsburg and Breyer wanted Obama to name their replacements, they should have retired in 2009 or 2010.
Surely you jest.
The sole purpose of the Republican Party is to serve as an ineffective alternative to the Democrat Party.