Tools: D3js, Observablehq
This visualization is telling you what is the majority vote per county in American for this past election. It uses a spikes size and color to represent the amount of votes and the majority party respectively. The data comes from a github data bank that collected it from sites like Fox News, Politico, and NYT.
I would change the triangles to be bisected into the 2 colors (Red and blue). This would give a better representation to how voting within your county works for presidential elections. You can also use different symbol rather than a triangle to represent it.