Don’t know about that, but here are some Obama financial contributors (they gave their songs for an album he is selling on his site exclusively to raise funds).
http://store.barackobama.com/ProductDetails.asp?ProductCode=CD3000
1. Eternity - Lionel Richie
2. Signed Sealed Delivered - Stevie Wonder
3. Waiting On The World To Change - John Mayer
4. American Prayer - Dave Stewart
5. Battle Cry - Shontelle
6. Make It Better - Los Lonely Boys
7. Pride In The Name Of Love - John Legend
8. I Have A Dream - BeBe Winans
9. Am I All Alone - Suai
10. One Is The Magic # - Jill Scott
11. Love & Hope - Ozomatli
12. Looking East - Jackson Browne
13. Out of Our heads - Sheryl Crow
14. Promised Land - Malik Yusef with Kanye West and Adam Levine of Maroon 5
15. Hold On - Yolanda Adams
16. America The Beautiful - Keb’ Mo’
17. America - Ken Stacey
18. Wide River - Buddy Miller