The mix of voting methods and systems that were used in the 2006 general election varied across states, territories, and the District, and this mix is not expected to change substantially for the 2008 general election. This variety is due to several factors, but particularly the degree of influence that these governments have exerted over local jurisdictions in selecting systems. In establishing their voting environments, states, territories, and the District reported approving or otherwise certifying their systems against requirements and described largely similar approaches in doing so. Further, they reported facing some of the same challenges, such as ensuring that vendors meet requirements and completing the approval process on time; and identified steps they have taken to address these challenges.