Reuters is about as left wing as a 'media' outlet can be. So I question their impartiality. Actually I don't, since I self-inflict their drivel most days.
And elections aren't won based on the methodology used for that poll, so it's worth about what one would expect from an irrelevant poll.
The thing the left needs to worry about, and I think they are already, is that Kamala was a horrible campaigner in 2020. Of course, back then she dropped out when the money ran out, which was before a single vote was cast. She had little success, mostly because her positions are pretty much socialist, and that doesn't go over too well in Iowa and New Hampshire. Hence the furious re-branding of her as some kind of moderate. The people will fall for it, because the media will be shoveling it down their throats. Not all the people. They're not all sheeple.