Why Putin doesn't want Biden to be the nominee.

[Garrett78]

12. People who self-identify as moderate or independent or undecided or all of the above are...

...all over the map ideologically-speaking: https://fivethirtyeight.com/features/the-moderate-middle-is-a-myth/.

The upshot of all this is that if you’re a campaign trying to appeal to independents, moderates or undecided voters — or a concerned citizen trying to make sense of these groups in the context of an election — policy and ideology aren’t good frames of reference. There just isn’t much in terms of policy or ideology that unites these groups.

Anybody who claims to have the winning formula for winning moderate, independent or undecided voters is making things up. Perhaps more centrist policies will appeal to some voters in each of these categories — but so will more extreme policies.

And come election day, these potential swing voters may not ultimately care all that much about policy. They don’t tend to identify themselves based on ideology, and they don’t follow politics all that closely.