The Constitutional Accountability Center has just released a statistical study of the current Supreme Court’s pro-corporate voting patterns. And guess what? The numbers back the trend that’s anecdotally hard to miss.

CAC’s statistical study tests empirically the idea that the conservatives on the Roberts Court tend to side with corporate interests. Our study examined every opinion released by the Roberts Court since Justice Samuel Alito began participating in decisions, and in which the U.S. Chamber of Commerce was either a party or an amicus curiae — a universe of 53 cases. This study reveals an overall success rate for the Chamber of 64% (34 victories in 53 cases), and a success rate of 71% in cases decided by a narrow (five-Justice) majority. The Court’s conservatives (Chief Justice Roberts and Justices Antonin Scalia, Samuel Alito, Clarence Thomas, and Anthony Kennedy) tend to vote together in their support for the Chamber, while the Court’s moderate/liberal bloc (including former Justice David Souter, who was on the Court for most of these rulings) was more centrist, casting only 41% of its votes in favor of the Chamber.

These data strongly support the proposition that there is a strong ideological component to the Justices’ rulings in business cases, with the Court’s conservatives frequently adopting the Chamber’s position. In one particularly startling finding, Justice Alito, since joining the Court, has never cast a vote against the Chamber of Commerce’s position in a closely divided case. This statistical evidence supports the charge by President Obama and Chairman Leahy that the Court’s conservative majority has a disturbing pro-corporate tilt, and this reality should provide an important frame for General Kagan’s upcoming confirmation hearing.

You can find CAC’s full report and analysis here. And check out People For’s extensive report on the Rise of the Corporate Court from earlier this year.