The closely contested runoff between Keiko Fujimori and Roberto Sánchez on June 7 has kept trader expectations for voter turnout anchored near first-round levels of roughly 74 percent, with the largest share of probability on the 70–75 percent and 75–80 percent buckets. Peru’s mandatory voting system, combined with the high-stakes nature of the polarized contest and ongoing campaign mobilization by both sides, supports participation rates in the low-to-mid 70s. Recent first-round logistical delays and slow rural tabulation introduced some uncertainty, yet they did not materially depress turnout. Potential catalysts for separation include intensified get-out-the-vote efforts in swing regions, any late campaign developments that heighten engagement, or conversely signs of voter fatigue that could push participation below 70 percent.