Since you helped me out I'll help you out.
The reason the markets are different is because of who has access to each market.
For example, Polymarket is not open to United States investors. Predictit is open to US investors. US investors have to jump through hoops to participate on Polymarket.
My theory is that the little democratic pow wow (Joes covid weekend) that got the MSM to collude to support Kamala as the greatest thing since sliced bread despite being highly unpopular, also made a coordinated effort on predictit to move markets.
She got an initial "push" in media relations, but there was no real change in the polls. There were a lot of manipulated polls that were released by the same people saying joe was "sharp as a tack" but the reality is this was just a coordinated push with MSM.
The initial push will wear off fast. Kamala will be forced to defend herself AND Joe's policies. The reasons that she was so unliked before will be on display for the world to see soon enough. Then she will have to debate the reigning debate champion Donald Trump under the brightest spotlight and pressure cooker she has ever been in. She will have to toss the most perfect word salad ever to have a chance, but i just don't think word salad is a good enough dish for the American people. Americans are more sophisticated and like things like steak, wine, nice buildings, golf courses.
It's going to be a landslide.