Pollster: Undecideds Could Decide Iowa

Volatile group of voters

A Monmouth University poll has a warning for all the campaigns ahead of Monday's Iowa caucuses: there are a lot of undecided voters or voters that could change their minds.

According to the poll, 48% of likely caucus-goers say they have completely made up their minds.

Another 38% say they have a strong preference but are still willing to keep their mind open in the final days. Just 1-in-7 have only a slight preference at this late date (7%) or say they are still really undecided (8%). Majorities of Trump (54%), Cruz (60%), and Carson (59%) supporters say their minds are completely made up while just 37% of Rubio voters say the same.

The poll also found that 6 in 10 Iowa GOP supporters would be happy to support Trump as nominee.

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