The Shadowy Nonprofit Backing Marco Rubio Has Spent a Surprising Amount of Money

The New York Times, in an in-depth story published Monday, provided a look into a conservative nonprofit group "putting money behind" presidential candidate and Sen. Marco Rubio.

Some of the details surprised Republican media buyers. For one, all of the money that has gone into television advertisements supporting Rubio has come from the nonprofit group—and not his campaign or the "super PAC" backing him.

Additionally, the money that the nonprofit Conservative Solutions Project has spent on pro-Rubio television advertisements alone this year has totaled $5.5 million.

The group's total spending is about on par with the Right to Rise PAC, the super PAC supporting former Florida Gov. Jeb Bush.