Neal rose to fame on America's Got Talent, where he won over the public and judges with his operatic voice.
He went on to record his first album My American Dream after winning the show.
Boyd died at his mother's home Sunday night in Sikeston, Missouri. Boyd's high-profile win was so iconic for his hometown that it constituted Sikeston to rebrand October 2008 as "Neal E. Boyd month".
"Boyd also ran unsuccessfully as a Republican for a southeast Missouri House of Representatives seat, losing in the general election in 2012 and in the primary in 2014", the AP reports.
Last year, he and his mother were reportedly badly injured in a vehicle accident after he blacked out while driving. "[Recovery is] a very slow progress. When God's given you the time to rebuild your spirit and rebuild your body", the singer said. "It was really about the tone of politics at the time, and I don't see any opportunities right now to get involved again, but I would love to", Boyd shared.