The anonymous donors behind dozens of controversial billboards in Ohio and Wisconsin warning against voter fraud have come forward.

Stephen and Nancy Einhorn are the "Private Family Foundation" behind billboards warning that "voter fraud is a felony" that can result in “up to 3 1/2 years and a $10,000 fine."  Stephen Einhorn runs investment banking and venture capital firms. The couple has given nearly $50,000 to Wisconsin Gov. Scott Walker (R) since 2005.