Democrats have strengthened their prospects of controlling Congress in the November 3, 2026, U.S. midterm elections, with New York Times/Siena surveys showing leads in Texas, Ohio and Alaska and betting markets assigning high odds to a Democratic House takeover. A Democratic sweep or control of either chamber could support South Korean renewable-energy, secondary-battery and energy storage system (ESS) stocks by restoring some clean-energy subsidies and investment tax credits, expanding grid and transmission investment, and accelerating grid-connected ESS deployment. However, analysts said a Democratic victory would not necessarily revive legislation promoting electric-vehicle consumption during President Donald Trump’s term. The political shift could also constrain Trump’s agenda, although he has bypassed Congress on measures including mass immigration raids, the Iran war and reconstruction of the Capitol and surrounding areas.