Despite massive population changes in the state from 1901 to 1961, the rural-dominated legislature refused to reapportion House and Senate seats based on population. They held on to old representation to maintain political and economic power in agricultural areas. In addition, the state legislature gerrymandered the few Birmingham legislative seats to ensure election by persons living outside Birmingham.
One result was that Jefferson County, containing Birmingham's industrial and economic powerhouse, contributed more than one-third of all tax revenue to the state, but did not receive a proportional amount in services. Urban interests were consistently underrepresented in the legislature. A 1960 study noted that because of rural domination, "A minority of about 25 per cent of the total state population is in majority control of the Alabama legislature."[6] African Americans were presumed partial to Republicans for historical reasons, but they were disfranchised. White Alabamans felt bitter towards the Republican Party in the aftermath of the Civil War and Reconstruction. These factors created a longstanding tradition that any candidate who wanted to be viable with white voters had to run as a Democrat regardless of political beliefs.
During the Civil Rights Movement, African Americans achieved a protection of voting and other civil rights through the passage of the nationalCivil Rights Act of 1964,[32] and the Voting Rights Act of 1965. De jure segregation ended in the states as Jim Crow laws were invalidated or repealed.[33] Under the Voting Rights Act of 1965, cases were filed in Federal courts to force Alabama to redistrict by population both the House and Senate of the state legislature. In 1972, for the first time since 1901, the legislature implemented the Alabama constitution's provision for periodic redistricting based on population. This benefited the urban areas that had developed, as well as all in the population who had been underrepresented for more than 60 years.[6] After 1972, the state's white voters shifted much of their support to Republican candidates in presidential elections (as also occurred in neighboring southern states). Since 1990 the majority of whites in the state have voted increasingly Republican in state elections. In 2010, Republicans won control of both houses of the legislature for the first time in 136 years.[34]