1 December 1919: England — Nancy Astor became the first woman to take her seat in the House of Commons.[100][101] 1 December 1919: North Dakota — The State House ratified the 19th Amendment,[102] becoming the 20th state to approve the federal amendment.[103] 3-4 December 1919: South Dakota — On the 3rd, the State House adopted the federal suffrage amendmeent followed on the 4th by the State Senate's ratification of the 19th Amendment.[104] 12 December 1919: Colorado — In a special legislative session, both the State Senate and House unanimously ratified the 19th Amendment.