Five things we learned from Tuesday's Santorum sweep

Impressive wins for Santorum

    Just Watched

    Impressive wins for Santorum

Impressive wins for Santorum 02:49

Story highlights

  • Rick Santorum goes 3-for-3, winning GOP contests in Minnesota, Missouri and Colorado
  • Santorum's sweep deals serious blow to frontrunner Mitt Romney's momentum
  • Obama aide: Tuesday's results suggest GOP base doesn't trust Romney

Rick Santorum's clean sweep in Colorado, Minnesota and Missouri on Tuesday was the latest plot twist in what was already a potboiler of a Republican presidential campaign. Here are five things we learned from Tuesday:

Minnesota rejects Romney

Don't believe the spin: Mitt Romney wanted to win Minnesota, and lost.

The Romney campaign sent reporters a "Reality Check" memo on Tuesday morning downplaying the importance of Colorado, Minnesota and Missouri, correctly pointing out that delegates in the states will not be allocated until later this year.

"It is difficult to see what Gov. Romney's opponents can do to change the dynamics of the race in February," wrote Romney political director Rich Beeson. "No delegates will be awarded on February 7 -- Colorado and Minnesota hold caucuses with nonbinding preference polls, and the Missouri primary is purely a beauty contest."

OK, but as recently as a few days ago, Romney's staff was taking Minnesota very seriously.

Impressive wins for Santorum

    Just Watched

    Impressive wins for Santorum

Impressive wins for Santorum 02:49
PLAY VIDEO
Highlights of candidate speeches

    Just Watched

    Highlights of candidate speeches

Highlights of candidate speeches 03:05
PLAY VIDEO
Colorado GOP chair: 'Santorum wins'

    Just Watched

    Colorado GOP chair: 'Santorum wins'

Colorado GOP chair: 'Santorum wins' 00:54
PLAY VIDEO
Santorum: 'It was a good day'

    Just Watched

    Santorum: 'It was a good day'

Santorum: 'It was a good day' 02:40
PLAY VIDEO

Remember: Romney flew straight to Minnesota, a state he won in 2008, the morning after his win in the Florida primary last week.

A super PAC supporting the former Massachusetts governor spent money on television ads in Minnesota. The Romney campaign pumped anti-Santorum robocalls into the state.

The Romney team even had tentative plans to send the candidate to Minnesota the day after the Nevada caucuses, but backed away from that schedule when it became clear that Santorum was the Republican candidate resonating with the state's small, conservative caucus electorate.

Despite the best efforts of Romney-world to downplay the importance of Minnesota, the campaign played to win there.

Romney's third-place finish in Minnesota behind Santorum and Ron Paul was a very real loss for the national frontrunner.

Swing state Santorum

Tuesday night's results handed Santorum a compelling talking point as he makes the case that he is better qualified than Gingrich to be the conservative alternative to Romney -- that he can appeal to voters in key battleground states.

Santorum has won four swing states this primary cycle: Iowa, Missouri, Minnesota and Colorado. Romney won three: New Hampshire, Florida and Nevada. Gingrich won South Carolina, which will be firmly in the GOP fold come November.

The former House Speaker's nomination strategy also focuses largely on southern states that will not be competitive in the general election.

After his strong Midwestern showing on Tuesday, Santorum can now plausibly make the case that he can run a national campaign like Romney, rather than a regional one like Gingrich.

Low turnout, again

Are Republicans energized? Not if turnout is an indication.

Early reports show fewer voters participated in Tuesday's primary and caucuses than in 2008.

Missouri had an excuse -- voters knew the primary didn't mean anything more than a popularity contest -- the real vote takes place when the state holds caucuses on March 17 -- so that could explain low numbers.

Robin Carnahan, the Missouri secretary of state, had predicted a 23% turnout. It didn't come close to that.

Tuesday's low numbers follows turnout in Florida last week, which was down 14% from 2008 and Nevada, which was down 26% from the last election.

Some say the turnout reflects an ongoing unhappiness with the Republican field while others say it's the bitterly negative tone of the campaign.

Republicans say it will be different in November when they're running against the president.

The reaction at 1600

In his victory speech, Santorum told supporters that Romney and Obama were hearing their cheers then reconsidered about the president.

"I wouldn't be surprised if he isn't listening. Why do you think he would be listening now?" Santorum asked.

Apparently, someone at the White House was listening — an Obama aide had a different take on the results than Santorum's.

"The Santorum victory in Missouri is a sign the base of the GOP doesn't trust Mitt Romney," the aide said. "Right now, Romney should be locking up the nomination, not losing contests. This weakness will follow him into the general election."

Retail politics, again

Santorum's win in Missouri wasn't really a surprise — Gingrich wasn't on the ballot, Santorum had no one to have to split the conservative vote, and Romney put little into the state.

Minnesota was a surprise. Colorado was a stunner, given Romney's success in the state in 2008.

Romney made several stops in the state, including one on the day of the Nevada caucuses on Saturday. But after bailing on Florida and Nevada, Santorum spent nine days in Colorado around trips to Missouri and Nevada talking to voters and shaking hands.

That's the same strategy credited for his upset win over Romney in Iowa, where be pretty much took up residence in the months leading up to that state's caucuses on January 3.

      Election 2012

    • CHICAGO, IL - NOVEMBER 06:  U.S. President Barack Obama stands on stage with first lady Michelle Obama, U.S. Vice President Joe Biden and Dr. Jill Biden after his victory speech on election night at McCormick Place November 6, 2012 in Chicago, Illinois. Obama won reelection against Republican candidate, former Massachusetts Governor Mitt Romney.  (Photo by Chip Somodevilla/Getty Images)

      A black man is returning to the White House. Four years ago, it was a first, the breaking of a racial barrier. Tuesday night, it was history redux. And more.
    • CHICAGO, IL - NOVEMBER 06:  U.S. President Barack Obama stands on stage after his victory speech at McCormick Place November 6, 2012 in Chicago, Illinois. Obama won reelection against Republican candidate, former Massachusetts Governor Mitt Romney.  (Photo by Chip Somodevilla/Getty Images)

      The 2012 presidential election shattered spending records, further polarized a divided country and launched a thousand hashtags.
    • Even though voters indicated to pollsters that their financial situation is the same or worse than it was four years ago, they put their trust in the president.
    • US President Barack Obama addresses a crowd of supporters on stage on election night November 6, 2012 in Chicago, Illinois. President Barack Obama swept to re-election Tuesday, forging history again by transcending a slow economic recovery and the high unemployment which haunted his first term to beat Republican Mitt Romney. AFP PHOTO/Jewel Samad        (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

      The president faces a long and familiar set of challenges after riding a wave of support from moderates, women and minorities to victory.
    • Republicans kept a lock on the U.S. House of Representatives, a crucial victory after the party failed to wrest away the presidency from Barack Obama and the Senate from the Democrats.