Why do you think the polls would correctly predict the result?
Use Polymarket instead, where money is on the line.
Thing is, prediction markets tend to be gamed by people who bet large amounts of money. I used a (play money) prediction market platform before and there was literally a "markets that get easily gamed by whales" section on the website.
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I kept hearing people laugh at Polymarket. "It's not a real poll!" But it guessed correctly when almost none of the polls did. I think I'll continue to listen to betting markets.