The Democratic Party seems a lot less doom-and-gloom than four years ago.Tom Williams/CQ-Roll Call, Inc via Getty ImagesThe Democratic National Convention in 2024 showed a shift from the party in 2020.Democrats in 2020 were more solemn and more interested in appealing to progressives in the party.This year there's been a focus on joy and on appealing to moderates, independents, and GOP voters.Granted, 2020 was unusual, to say the least.