Langer. The turbulence in the governor's office ended in 1938, when Democrat John Moses was elected; he held the office for six years. By 1943, seeking a way to overturn the Democratic control, the IVA Republicans coalesced into the Republican Organizing Committee (ROC). They regained the governor's office by 1944, against the national popularity of Democratic candidates led by President Franklin D. Roosevelt. The insurgency left a crippled Democratic Party struggling to re-organize. As the Republican ROC controlled state politics into the early 1950s, the Democratic Party and the NPL, the state's two liberal parties, merged into the North Dakota Democratic-NPL Party by 1956. The Republican Party and the Democratic-NPL Party became the two main parties in the state, which has continued into the early 21st century. 1961 to present The North Dakota Republican Party and the Democratic-NPL Party have dominated state politics since the 1950s. The Dem-NPL Party made a comeback by 1960, and held the governor's office for 20 years until Republican Allen I. Olson was elected in 1980. The Democrats regained the office again from 1985 to 1993 with George Sinner, but since 1993 Republicans have controlled the office. While the Democrats made some strides in trying to control the state's constitutional offices, such as attorney general and tax commissioner in the 1980s, in the early 21st century, all of the statewide offices are held by Republicans. The last Democrat to serve was Agriculture Commissioner Roger Johnson, who resigned; he was succeeded by Republican Doug Goehring, appointed by Republican Governor John Hoeven. Changes in demographics are beginning to influence the elections. A sizeable portion of North Dakota lands are held by federally recognized Native American tribes in reservations. Native Americans have become more active in electoral politics, and most vote with the North Dakota Democratic-NPL Party. In 2016, a record three candidates running for statewide office are Native American: Chase Iron Eyes for US Congress, Ruth Buffalo for Insurance Commissioner, and Marlo Hunte-Beaubrun for the Public Service Commission, the agency that regulates oil pipelines. In August 2016, a federal court ruled that North Dakota's new voter ID law was too restrictive, reverting the state's voting rules to their 2013 revision for the following election. Under the nullified rules, the state would have disallowed use of federal tribal IDs that did not include street addresses, even though most Native Americans on reservations use post office boxes. The court