While traders have Democrats as favorites to flip control of the House of Representatives, odds in the Senate have narrowed in 2026. Republicans saw their odds of maintaining their majority fall from 67% on January 1 throughout that month and February, but the declines intensified in March as traders priced in the political consequences of the U.S.-Iran war. Since the start of the conflict, President Donald Trump's approval rating has fallen to its lowest levels of his second term in many polls. U.S. flags ...