Kamala Harris's post-debate boomlet has run its course

Following her debate performance, Harris continued her tradition of backing off or adjusting the positions she took, most notably, on healthcare and busing — though her recent decline may have more to do with her simply getting less media attention after the initial post-debate swarm.

The pattern is similar to what happened after her launch, in which she had a strong rollout and nearly doubled her support, only to see her polling steadily decline as the campaign returned to the day to day. In contrast, Warren’s growth has been much slower and steadier.