Before you use the Supreme Court as an excuse for voting for Romney, take a look at the judges he appointed, as well as those he appointed to give him a list of judges from which to choose.
I am not real excited about Romney appointments to the court, but it would clearly be better than Obama. Secondly, a Republican Senate will have the impact of pushing Romney's picks a little to the right. As we saw with the GOP Senate rejection of Harriet Miers, we can influence his picks much better than Obama's far left picks. I'll take a Sandra Day O'Conner moderate over a Ginsberg/Kagan leftist.