The US equity indexes closed at record highs on Thursday.<br />Analysts look to the Democrats' victories in the Georgia Senate runoffs as a factor in the surge.<br />Experts say the dual victories in the Georgia Senate runoffs pave the way for sweeping fiscal support in early 2021.<br />The S&P 500 was up 1.5% at 3,803.79.<br />The Dow Jones industrial average closed 212 points higher at 31,041.13, up 0.7%.<br />While the Nasdaq composite saw an uptick of 2.6% at 13,067.48.