The Texas native will make the song, "Cheney's Toys," available on Super Tuesday via both his MySpace page and his record label's website. The day before the primary elections, the song will go online as eMusic's Daily Download.

"Cheney's Toys," which follows McMurtry's 2005 anti-George W. Bush anthem, "We Can't Make It Here," references both Guantanamo and Abu Ghraib in its lyrics, telling the story of a US soldier returning from Iraq, blind and suffering from brain damage.

Along with the free download, McMurtry and his label are encouraging fans to create their own videos for the tune and post them online. The singer will choose his favorite from all the entries, with the video's creator winning an 8GB Apple iPod Nano. See McMurtry's website for more information.

The new song appears on McMurtry's forthcoming studio album: "Just Us Kids," the singer's eighth solo effort, arrives in stores April 15. The set follows 2005's "Childish Things."

McMurtry has a handful of live dates lined before the album drops, including Saturday night's (2/2) appearance in Austin, TX.