The super PAC backing Nikki Haley is hammering Ron DeSantis and has become the top Iowa advertiser. Her campaign is also pouring in ad money before Jan. 15.

Republican presidential candidates and outside groups have blanketed the Iowa airwaves ahead of the first-in-the-nation caucuses, spending nearly $105 million on ads there in 2023.

And that figure is set to grow by at least another $7.5 million before the Jan. 15 caucuses, according to upcoming ad reservations tracked by the firm AdImpact. It’s being driven by former U.N. Ambassador Nikki Haley’s late push for a strong finish in Iowa, after former President Donald Trump and Florida Gov. Ron DeSantis spent most of 2023 polling first and second there.