The map with the most detailed data contains information on each of the more than 9,000 voting districts in the state, with information such as racial and ethnic breakdown and election results for races from 2004 through 2010. Also included are the two partisanship scores that, while unclear how they were calculated, appear to measure how Republican or Democratic a precinct votes. The higher a positive value, the greater the margin by which Republicans won in those precincts; the lower a negative value, the stronger the Democratic advantage.