It should be possible to access the markets legally from within the US.
"Who will win the 2024 US presidential election?", "Who will be POTUS on 2025/1/21?" and similar would count. Markets about Congress wouldn't count.
https://eventtrader.interactivebrokers.com/en/home.php
ForecastEx went live a few months ago but hasn’t listed presidential election markets yet as of Sep 13, 2024.
EDIT Sept 14, 2024: the market should be continuously available in the US for ≥1 week (not counting technical issues like a server outage)". (This will keep the same criteria as the Kalshi market).
Related to:
@PlainBG I’ll use the same criteria as the Kalshi market -
"the market should be continuously available in the US for ≥1 week (not counting technical issues like a server outage)".