Annual fundraising heatmap — top 50

Per-year contribution totals across the top 50 fundraisers by cumulative raised. Cells colored on a log scale (lighter = small, darker red = year's peak — $4,489,681). Election-cycle spikes (every 2 years) jump out visually.

Source: NV SOS Aurora cf_contributions, pulled by scripts/build_per_year_contributions.py. Methodology.