Seasonal Pattern of the S&P 500 in U.S. Election Years during Fourth Years of a Decade (1904-2024): Composite Line of Election Years (1904, 1924, 1944, 1964, 1984, and 2004; based on daily closes from Stooq) vs. S&P 500 Performance from January 1 to September 27, 2024 (y-axis scale: percentages).