So I tracked down the survey: http://www.rasmussenreports.com/publ...e_court_update

Most American voters (60%) agrees and says the Supreme Court should make decisions based on what is written in the constitution, while 30% say rulings should be guided on the judge’s sense of fairness and justice.
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While 82% of voters who support McCain believe the justices should rule on what is in the Constitution, just 29% of Barack Obama’s supporters agree. Just 11% of McCain supporters say judges should rule based on the judge’s sense of fairness, while nearly half (49%) of Obama supporters agree.