But a look at how voter turnout shifted in 2020 shows a strong link between states making it easier to vote and voters actually turning out. In 2020, the states that showed the biggest jumps in voter turnout were almost uniformly states that also made it dramatically easier to vote, often by allowing everyone to vote by mail. But these data show an undeniable correlation between mail voting laws and turnout in the last election. But there were significant differences in both the turnout rate by state and how much higher states’ turnout was from earlier elections. But after it instituted mail voting, turnout jumped a stunning 14.7 percentage points to 57 percent—still near the bottom in turnout, but a massive improvement.