The Anti-Masonic Party holds the first national…
September 1831 CE
The Anti-Masonic Party holds the first national convention in Baltimore, Maryland, on September 26–28, 1831.
The National Republican Party and the Democratic Party will soon imitate them, also holding conventions in Baltimore.
The death of the Congressional nominating caucus in 1824 had left a void, with no institutional method on the national level for determining the nominees for President.
This void has been filled by a political innovation; for the first time in United States history, the candidates will be chosen by national conventions.