Democrats have flipped the Georgia House, giving them new control of at least 12 state legislative chambers across the U.S. when lawmakers are sworn in later this year and early next. It's the biggest gain for either political party since Republicans took over 20 chambers in 2010. Races that will determine the balance of power remain to be called in the North Carolina Senate and both chambers in Alaska. The party running state legislatures can have a direct impact on policies including taxes, data center development and who's eligible for Medicaid.