On the Polymarket platform, driven by US politics and global geopolitical events, popular prediction market trading volumes range from several hundred thousand dollars to $174 million. Among them, major markets focus on elections in the United States, Iran, Portugal, and Venezuela, as well as speculations about US-China tensions and US control over Greenland. The platform relies on stablecoins such as USDT and USDC for betting, highlighting the role of stablecoins in expanding cryptocurrency adoption. Especially before major events like the 2026 World Cup, convenient fiat-pegged trading is expected to encourage mainstream user participation in prediction markets.