Nashville has been a Democratic stronghold since at least the end of Reconstruction, and has remained staunchly Democratic even as the state as a whole has trended strongly Republican. Pockets of Republican influence exist in the wealthier portions of the city, but they are usually no match for the overwhelming Democratic trend in the rest of the city. The issue of school busing roiled politics for years but subsided after the 1990s. While local elections are officially nonpartisan, nearly all the city's elected officials are publicly known as Democrats. The city is split among 10 state house districts, all of which are held by Democrats. Three state senate districts and part of a fourth are within the county; two are held by Democrats and two by Republicans.