"Iowa in the Spotlight: GOP Candidates' Frenzied Campaigns and Spending Surge Ahead of Caucuses"

Republican candidates and their supporting groups have spent nearly $105 million on advertising in Iowa ahead of the caucuses, with Nikki Haley's campaign and supporting super PAC, SFA Fund Inc., leading the expenditure. The ad war reflects the shifting dynamics of the GOP race, with Haley aiming for a strong Iowa finish to challenge front-runners Donald Trump and Ron DeSantis. While DeSantis's campaign has faced internal issues and reduced ad spending, pro-DeSantis groups and his campaign continue to invest in Iowa. Trump's campaign has also been active but has not aired a TV ad since early December. Meanwhile, other candidates like Vivek Ramaswamy are focusing on direct voter outreach, moving away from heavy ad spending.