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Scene at Rick Santorum’s election night party ten minutes before its scheduled start time. And then after 40 minutes, much improvement in the size of the Santorum’s election party. (Photos taken by Rebecca Kaplan, CBS News and National Journal)

Mitt Romney takes Maryland Primary, CBS News Estimates

CBS News estimates that when all the votes are counted, Mitt Romney will take the Maryland GOP primary and with that victory go over the halfway mark in the number of delegates needed for the Republican nomination.

Rick Santorum sweeps all three states Tuesday

Rick Santorum wins the Minnesota and Colorado caucuses and also wins the non-binding primary in Missouri.

CBS News Projects Rick Santorum will win MN and MO

CBS News projects that Rick Santorum will win the Minnesota caucuses and the non-binding Missouri primary. The results from Colorado are still being counted.

CBS News Correspondent Dan Raviv recaps the results of the New Hampshire primary and what this will mean in the next contest in South Carolina.

CBS News correspondent Dan Raviv and our elections unit director Anthony Salvanto analyze the New Hampshire primary.