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 which predate the present U.S. Constitution. The Admission to the Union Clause also forbids the creation of new states from parts of existing states without the consent of both the affected states and Congress. The primary intent of this caveat was to give Eastern states that still had western land claims (there were four at that time) a veto over whether their western counties could become states. This clause has served the same function since, each time a proposal to partition an existing state or states has arisen. Article IV, Section 3, Clause 1: Between 1781 and 1789 the United