This bar chart displays the total votes for Donald Trump and Joe Biden in the 2020 California election, with bars sized by vote count and colored using a sequential red color scale from `colorbrewer`. The visualization emphasizes the vote margin between the two candidates. Implemented with D3 v6, it uses `d3.scaleBand` and `d3.scaleLinear` to position bars, and includes a mouseover tooltip showing formatted vote totals via `d3.format(',.2f')`. The chart loads data from a CSV file and renders as SVG with animated transitions.