How will moderate Republicans shape the primaries?

Likely 2016 GOP candidates
Adam Gabbatt of The Guardian newspaper holds images of potential Republican candidates in National Harbor, Md., Feb. 26, 2015.
Carolyn Kaster | AP photo

Scott Walker is expected to add his name to the ever-growing list of Republican candidates for the 2016 election in an announcement today.

MPR News' Kerri Miller looked at the current pool of presidential hopefuls and talk about the role of moderate candidates in the upcoming debates and primaries.

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