Influential economist Justin Wolfers noticed a significant shift in prediction market odds at Polymarket, sparking speculation about the declining influence of a whale heavily betting in favor of former President Donald Trump. What Happened: Wolfers, in his X post on Sunday, drew attention to the sharp drop in betting odds for Trump, standing at 54% as of this writing, down from 66% on Oct. 30. A professor at the Ford School of Public Policy at the University of Michigan, Wolfers expressed uncertainty about whether this change was due to the diminishing sway of the whale or a recent shift in p…