Our Principles PAC has spent roughly $2.5 million on its campaign to stop Donald Trump in his tracks. | AP Photo Anti-Trump group takes out full-page ad in Iowa Sunday papers

DES MOINES — Every Iowan who wakes up Sunday morning and reads a newspaper will see a full-page ad attacking Donald Trump, who is battling Ted Cruz here for a first-place finish in Monday's first-in-the-nation caucuses .

The ad, which attacks six specific issues where Trump has broken with conservative orthodoxy, is part of a six-figure buy from Our Principles PAC, a group formed to stop the New York billionaire from capturing the Republican nomination.


The group has now spent roughly $2.5 million on its campaign to date.

"Our efforts have kept Trump from growing here, which is critical and will continue to be moving forward," said Katie Packer, the GOP operative who founded the super PAC earlier this month. "As long as the overwhelming number of Republicans are saying no to Trump, we can continue to raise questions and communicate the message that Trump isn't conservative, and isn't principled on any issue."

The ad, which will run in the Des Moines Register and a number of regional newspapers across Iowa on Sunday, features a banner headline that asks: "Do we really know him?"

Below the banner are several vignettes laying out Trump's transgressions on policy, including: a past statement that he was pro-choice on abortion, a proposal to raise taxes, his past support for certain gun control efforts and what the group calls "flip flops on mass deportation and amnesty."

The ad follows other anti-Trump efforts by the super PAC, including television ads, digital ads, a website and 100,000 "voters guide" mailers that began hitting Iowa mailboxes on Friday.