A potential Democratic takeover of the U.S. House of Representatives in November's midterm elections could introduce significant volatility into the fragile state of China-U.S. relations. Analysts warn that a so-called "blue wave" — a sweeping Democratic electoral victory — risks disrupting the current diplomatic détente between Washington and Beijing at a delicate moment in ties between the two powers. The outcome matters because stable China-U.S. relations underpin global trade and security arrangements, and any sharp policy shifts could have far-reaching international consequences.