Are Non-Voters Driving Trump’s Popularity?

A new Monkey Cage poll in Iowa finds that non-voters may be driving Donald Trump’s popularity.

“To build a sample, we began with the list of registered voters in Iowa and stratified our sample by factors like age and sex. Other pollsters have done something similar. However, what we did — but other have not — is stratify the sample based on another factor: Whether or not people had voted in at least one primary election since 2006.”

The results: Ben Carson led with 27%, followed by Marco Rubio at 17% and Donald Trump at 15%.