The Democratic Party suffered a historic drubbing a couple weeks ago. However, one of the things with which several left leaning commentators publically consoled themselves was that demographics are in their favor. The parts of the electorate which tend to vote for Democrats are growing, while those who tends to vote for Republicans are shrinking. Progressives like to focus on the examples of this they feel proud of: the non-white percentage of the US population is growing, and non-whites tend to vote Democratic. Young people also lean more heavily progressive on a variety of issues than previous generations did at the same age.
From a progressive point of view this sounds pretty good: progressivism will succeed in the end because it is supported by young and diverse people, while conservatism will die out because it is supported by old white people — and no one like them anyway, did they?