Looking over the Daily Mail (ugh), it sounds more like he expects a red wave. He says we're in for a surprise, but that's the kind of shit they always say.
That's not to say they won't reuse their bullshit playbook (lies, voter intimidation, etc) but so far the most pressing issue we have in the midterms in all states are just milquetoast neolib Democrats running the party, likely to thumb the scales on primary season yet again. You raise the energy of the opposition and the opposition will practically camp overnight in line to cast a vote (and volunteer to vote count, etc).
Oh, that 100% tracks from that rag. By comparison, a similar article from NPR was a lot more careful about it, e.g. "Mangione has received widespread public support, despite state and federal officials discouraging it." Good lesson in identifying bias.
NPR even had the message Luigi sent out thanking his supporters, which I think is nice.