Somewhat interesting... the only thing is that this might as well be the population density map for Texas... this could be more useful if it matched up against the population density to show which areas gave disproportionately more than others... certain small towns have a greater influence on political money than others...
Ask, and ye shall receive.
This map, however, shows per-capita contributions. The bubbles get larger as the disparity between population and total donations increases:
For example, the candidates received what amounts to $1.15 from each Houstonian. They received $1 per-resident from Dallas and $2 per-resident from Austin. But check out Blanco, Encinal and Salado. The candidates collected $57, $38, $25 per person there:
One note: The population totals are based on U.S. Census Bureau estimates from 2005 (the best I could do on short notice).
Ideas for more maps?