1911 United States House of Representatives election in Arizona clause for admitting Arizona Territory and New Mexico Territory as a single state, but that clause was removed in the final version. Arizona was the last territory in the contiguous United States, and after Arizona's admission, it would be another 47 years before another State (Alaska) was admitted. 1911 United States House of Representatives election in Arizona Arizona's first election to the United States House of Representatives was held December 11, 1911, for the 62nd Congress Arizona joined the union as the 48th state on February 14, 1912, having already elected its first Representative in December. Arizona Territory had been
Admission to the Union formed in the Northwest Territory under either ordinance. In August, 1789, the ordinance was replaced by the Northwest Ordinance of 1789, in which the new Congress (under the present Constitution) reaffirmed the Ordinance with slight modifications. The territory itself remained in existence until 1803, when the southeastern portion of it was admitted to the Union as the State of Ohio, and the remainder was reorganized. While the articles of Confederation were in effect, the Congress considered various ordinances admitting particular new states into the Union, none of which were approved: At the 1787 Constitutional Convention, a proposal to include the