Despite consistently outraising former President Donald Trump since entering the race in July, packing stadiums full of supporters and posting huge ratings at the Democratic National Convention, Vice President Kamala Harris is still roughly neck-and-neck in the polls. One polling expert has a theory about why she hasn’t yet been able to take a commanding lead. In an op-ed for the Hill, Democratic pollster Brad Bannon argued that Harris is primarily struggling to gain ground among a significant voting bloc when accounting for education level. Bannon posited that as the first Black and Asian wom…