In the aftermath of the 2016 U.S. presidential election, mainstream data analysts were left staring at a historic mathematical collapse. The numbers had completely missed a massive, shifting baseline of support for Donald Trump. While pundits debated the cause, statisticians identified a distinct psychological culprit: the "Shy Voter" phenomenon. Driven by social desirability bias, millions of voters chose to keep their preferences hidden from public polls, only to reveal the