Speculation about a presidential run by Rep. Alexandria Ocasio-Cortez (D-N.Y.) in 2028 is rising to its highest pitch yet — and some people are putting their money on it. AOC, as she is commonly known, now leads the field for the Democratic presidential nomination on the two best-known betting markets, Kalshi and Polymarket. Even if opinion polls tell a different story — most of them placing her third behind former Vice President Kamala Harris and California Gov. Gavin Newsom (D) — the idea of a presidential bid by the 36-year-old New Yorker is no longer confined to the realm of...