This was licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License by OpenSecrets.org. I contacted them with a request that they release it under a Creative Commons Attribution-ShareAlike License, and their reply was:

"Dear Guy,

Thank you for your note. You have our permission to use the image you cite under the Creative Commons Attribution-Sharealike 3.0 Unported License.

Best wishes,

Sheila"

If anyone wants to see it, I can forward the email to them.

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/3.0CC BY-SA 3.0 Creative Commons Attribution-Share Alike 3.0 truetrue