What is the contrast in mood between Republicans at CPAC and Democrats who gathered at the same venue earlier?

Republicans and Trump allies are gathering at CPAC with a celebratory mood, having won the White House, Senate, and maintained control of the House in the recent election cycle. The theme 'America is back on track' reflects their enthusiasm about these electoral successes. In contrast, Democrats met earlier at the same Gaylord National venue with a very different mood to elect a new DNC chair. Their gathering was more somber as they had lost the White House, Senate, and failed to win back the House. This ironic contrast highlights the shifting political momentum between the two parties.