Once again it looks like USAToday is on top of mapping innovation with a new series of maps showing the amount of contributions by party or candidate. The Campaign Finance Tracker map provides a graduated symbol map of contributions by state and by party. By clicking on a specific state the interactive map shows a bar chart that filters the information by amount or by month in which the contribution was made. A third bar chart shows which industry contributed to the party. The graduated symbol map is unusual in that in uses concentric circles to show the relative proportion of the contributions. The map is quite different that than developed by the Huffington post that drills down to individual contributors and also represents location as a graduated symbols.
Don't forget to check out the map on the independent groups that have garnered contributions. USAToday does not give their affiliation. For example, the Fund for America is affiliate with Democratic causes.