AnyChart drill-down maps let users click a region to navigate from a high-level overview into detailed sub-region data.
This sample maps the 2008 U.S. presidential election results using dual choropleth series for Barack Obama and John McCain, each with its own color scale and legend item. Clicking any state dynamically loads county-level geodata and drills into a detailed breakdown of vote percentages per county, with HTML tooltips showing candidate shares and context-menu drill-up navigation. Data is sourced from Wikipedia.
See the Drill Down Map documentation for all configuration options.