This chart displays campaign donations from various sports leagues, grouped by political party affiliation, using a stacked bar chart. Each bar represents the total donation amount per party, with colored segments showing the league breakdown. Hovering over a league in the color legend highlights its corresponding segments and dims others. The visualization uses d3.flatRollup, d3.stack, and d3.scaleBand for aggregating and rendering the data from the sports-political-donations.csv source.