A shift in the behavior of Oklahoma voters occurred, beginning in the 1960s. Registered Democrats began to more often vote Republican at the federal level and later at state level. As partisan debate became more polarizing, southern states including Oklahoma abandoned old voting patterns of supporting the Democratic party. After the 2004 Presidential Election, Republicans gained control of the House for the first time since 1921. In 2010, Republicans gained a large majority of 70 seats in the Oklahoma House of Representatives. Following the 2018 general election, Republicans gained the largest majority in state history with 76 of the 101 seats. This also includes the largest ever freshman class, with 46 new representatives.