Honestly, just get yourself an account that allows you to see who votes and vote order, it will save you a lot of paranoia.
3 of the first 11 upvotes are people I recognise and have interacted with. It’s obviously not sockpuppets.
If the downvotes I can see, two of the first 3 are people I’ve recently interacted with as well.
I’m a non-US fediversian and I upvoted it because I thought the headline was funny and because I sympathise with Americans for having to choose between these two old men (who aren’t even Bernie Sanders, which would have been more understandable).