{"version":"1.0","type":"rich","title":"graph2","description":"A donut chart displays the partisan composition of the U.S. Senate across five congressional sessions, from the 112th through the 116th Congress. Users select a specific congress from a dropdown menu, which triggers animated transitions between the donut’s arc segments and updates the numeric labels positioned along thin connector lines. Built with D3 v5, the visualization uses `d3.pie`, `d3.arc`, and `transition.attrTween` to interpolate geometry smoothly, while `d3.scaleOrdinal` assigns colors to Republicans, Democrats, and Others. The underlying data is embedded as an array of objects containing seat counts per party for each session.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b0b89d3f5e504a03bb5686ac9225bf5e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}