Trader consensus heavily favors 70–75% turnout in Peru’s June 7 presidential runoff because historical second-round participation has clustered in that band, mandatory voting for citizens aged 18–70 with fines for abstention sustains baseline compliance, and the June 7 vote proceeded without the polling-station delays or major incidents that depressed first-round figures. The closely contested race between Keiko Fujimori and Roberto Sánchez generated steady media attention and party mobilization, supporting participation near first-round levels of roughly 74%. A notably lower observed turnout in Lima on election day introduced modest downside risk, yet official tallies have typically landed inside the 70–75% interval once overseas and late counts are included. Outcomes outside this range would require either unusually widespread abstention driven by voter fatigue or an unexpected surge in last-minute mobilization.