Republican presidential candidate Rick Santorum has picked up an endorsement from former Colorado congressman Tom Tancredo (tan-KRAY-doh). The failed gubernatorial and presidential candidate is a tea party favorite. Santorum was campaigning in Colorado on Wednesday ahead of next week's GOP caucuses there in hopes of building some momentum for his White House bid. Santorum also was endorsed Wednesday by former congressman Bob Shaffer and former Lt. Gov. Jane Norton.