A new billboard-on-wheels by the National Republican Senatorial Committee (NRSC) has been circling Senator Doug Jones’ (D-AL) campaign kickoff event Sunday in Birmingham.

The mobile billboard features Jones alongside two of his colleagues in the U.S. Senate’s Democratic Caucus: presidential candidates Bernie Sanders (I-VT) and Elizabeth Warren (D-MA). The billboard is meant to remind Alabamians that Jones pledged to support whoever the Democrats nominate for president, no matter how radical that individual is.

Jones, who has positioned himself as an anti-Trump Democrat, told a crowd earlier this year that “whatever we’re going to do, we will end up supporting the (Democratic) nominee.”

In a statement, NRSC spokesperson Nathan Brand said, “Anti-Trump Democrat Doug Jones puts the interests of the most liberal and socialist members of his party ahead of his constituents.”

“Rather than standing for the principles and priorities of Alabama families, Jones has pledged his support to the extreme candidates in his party running for president,” he decried.

The mobile billboard has been circling B&A Warehouse in Birmingham where Jones is holding his campaign kickoff at 2:30 p.m. on Sunday.

This comes after the NRSC put up two billboards in August highlighting Jones’ support for any of the most extreme and socialist candidates for president. Additionally, the NRSC in July released a new video titled “Clowns,” reminding Alabama voters that Jones is willing to support any and all of the candidates on the Democratic presidential debate stage.

Sean Ross is the editor of Yellowhammer News. You can follow him on Twitter @sean_yhn