source: The United States presidential election of 1856 was the 18th quadrennial presidential election, held on Tuesday, November 4, 1856.
target: Elections for the United States president are quadrennial. The 18th election was in 1856. It was held on Tuesday, November 4, 1856.
references: Elections for the United States president are quadrennial. The 18th election was in 1856. It was held on Tuesday, November 4, 1856.