Tough luck, Newt: It looks like Rick Santorum has taken the former Speaker’s spot as the GOP presidential race’s top not-Romney candidate.

Santorum — a former Pennsylvania senator who has struggled since winning the Iowa caucuses — is poised to do quite well in Tuesday’s Republican presidential races in Colorado, Minnesota and Missouri, according to new surveys by Public Policy Polling.

Newt Gingrich, on the other hand, is trailing in third place in the two states he’s eligable in. He has just 22% of the vote in Minnesota, compared to Santorum’s 33%, and is five points behind his GOP rival in Colorado with 21%.

Gingrich is not even on the ballot in Missouri because he failed to qualify.