In 1878, a constitutional amendment was proposed that provided The right of citizens to vote shall not be abridged by the United States or by any State on account of sex.. This same amendment would be introduced in every session of Congress for the next 41 years. In July 1890, the Territory of Wyoming, which allowed women to vote, was admitted as a state. Wyoming became the first state with women suffrage. By 1900, Utah, Colorado, and Idaho joined Wyoming in allowing women to vote. In 1912, Theodore Roosevelt's Progressive (Bull Moose) Party became the first national political party to have a plank supporting women suffrage.