Willie Nelson Debuts New 'Vote 'Em Out' Song For Beto O'Rourke Rally: Watch

The song's "Vote 'em out!" refrain is certainly straightforward, but Nelson worked some motivational wordplay into each verse while stressing how important it was to exercise the right to vote in order to drive this "bunch of clowns you voted in" out of office. (A sample line: "The biggest gun we got/Is called the ballot box/If you don't like who's in there, vote 'em out.")

O'Rourke -- who delivered a rousing speech that touched on family separation at the border, climate change, the prison industrial complex, police brutality, universal healthcare, discrimination against the LBGTQ community and other issues concerning Texan voters before Nelson walked up to the mic -- watched the majority of Nelson's set from the back of the small stage, but joined him to sing a few lines of "On the Road Again." 

In addition to Nelson and his band, the bill for the evening was chock full of Texan talent, with Leon Bridges, Tameca Jones, Carrie Rodriguez and Joe Ely all throwing their support behind O'Rourke's campaign.

Watch Willie Nelson sing a few bars of "Vote 'Em Out" and listen to the studio version, which debuted on Oct. 11, below.