Former Vice President Joe Biden is heading down to Alabama to boost long-shot Democratic candidate Doug Jones.

Jones’ campaign announced that Biden will head to town for a rally on Tuesday, Oct. 3.

Biden endorsed Jones last month, before the first round of primaries, and the two have a longstanding relationship — Jones backed Biden’s earlier presidential runs. Jones, a former U.S. attorney best known for his work putting members of the KKK behind bars for bombing a black church that killed four young girls.

Jones’ campaign manager, Bill Romjue, is also a former Biden campaign staffer.

Jones is a major underdog in the deep-red state, but some Democrats believe he has an outside chance at winning if Republicans nominate controversial firebrand Roy Moore as their candidate. The GOP primary runoff between Moore, a former state Supreme Court justice, and appointed Sen. Luther Strange (R-AL) will take place next Tuesday.