Mitt Romney's campaign sought again to minimize the importance of elections in Missouri, Minnesota and Colorado on Tuesday, the same day polls show Romney trailing in Missouri and Minnesota.

The campaign sent out a memo from political director Rich Beeson pointing out that Missouri's primary is a "beauty contest" that doesn't have any delegates tied to it, and the other two states are non-binding on delegates.

"It is difficult to see what Gov. Romney’s opponents can do to change the dynamics of the race in February," Beeson writes. No delegates will be awarded on Feb. 7 — Colorado and Minnesota hold caucuses with non-binding preference polls, and the Missouri primary is purely a beauty contest. Except for the Maine and Wyoming non-binding caucuses running through February, the next contests are on Feb. 28 in states where Gov. Romney is strong. Arizona’s 29 delegates will be bound in a winner-take-all contest. Michigan, the state where Gov. Romney grew up, binds 30 delegates."

Romney's campaign has sought for days to downplay the importance of Minnesota. Former Minnesota Gov. Tim Pawlenty (R), a top Romney surrogate, has argued on two conference calls that the state's caucuses are unpredictable and unrepresentative because of their low turnout, and stressed that the other campaigns were in a strong position there. Romney canceled a planned visit to the North Star State on Monday, instead choosing to campaign in Colorado.

If Santorum can win both states he could make Romney look weak in the Midwest. That would make it three of three contests in Midwestern states where he beat Romney.

"If Santorum can win in Missouri and Minnesota, that'll expose Romney in the Midwest and hurt him heading into Super Tuesday," said GOP strategist Ford O'Connell, who is unaligned in the primary. "It could slow Romney down."