Not really a big deal.  There is NO nominee the R's would have approved from the D's last year.  There is NO nominee the D's would approve from the R's this year.  The country needs to move forward and this does that.  If you take a long term view the senate frequently changes control and this tactic will be used against the R's someday, everything averages out.  Here is a nice chart showing control move back and forth.  http://wiredpen.com/resources/political-commentary-and-analysis/a-visual-guide-balance-of-power-congress-presidency/