Regular maps, good. Interactive maps, better. Color coded interactive maps over time, THE BEST. Check out this map of Virginia’s 10th Senate District courtesy of the Virginia Public Access Project. In the early 2000s, the district was more red (conservative) than it is today. The lines are redrawn every ten years. The new lines went into effect in 2011 following the 2010 census, cutting out sections of Chesterfield and Powhatan to include some new parts of the city. If you want to really nerd out about gerrymandering, check out OneVirginia2021.