Nick Mourtoupalas highlights a significant shift in voting methods over the years, with states varying widely between mail-in voting, early voting, and in-person voting on Election Day. According to the data reported in the Washington Post, voters in California and other states have increasingly embraced mail-in ballots and early voting options, reflecting changing preferences and accessibility in the electoral process. This variation underscores the evolving nature of how elections are conducted in the United States.