CNBC analysis indicates that groups allied with Donald Trump and Elon Musk have poured hundreds of millions of dollars into the midterm elections, but the Republican Party's massive spending has not significantly altered polls or the election landscape. Data shows that from Labor Day to October 14, Republican groups injected over $740 million into congressional campaigns, with Trump-affiliated groups spending at least $220 million. Since July, Musk has also donated $276 million to Republican groups, bringing his total federal political contributions to approximately $366 million, making him the largest donor in this midterm election cycle. However, with less than three weeks until Election Day on November 3, the Republican spending offensive has barely changed the election landscape, and Democrats maintain leads in several key Senate races.