Could this be a hint at Kid Rock's true intentions?
Kid Rock for U.S. Senate merchandise will be on sale at Little Caesars Arena during Tuesday night's performance.
Related: Kid Rock to open Detroit Arena amid protests
The rock superstar is expected to reveal his future plans in front of thousands of fans at the first concert held at the arena. His announcement on any political aspirations will be unveiled after his first song.
Kid Rock has teased a Republican run for Senate on his website, although many people speculate that it is not actually the case.
Deadline Detroit reports that at least one group is claiming that Kid Rock is violating election law by selling merchancise.
Common Cause, a nonpartisan watchdog group in Washington, recently filed a Federal Election Commission complaint alleging that Kid Rock, aka Robert James Ritchie, illegally acts as a Senate candidate while failing to register, comply with contribution restrictions and disclose contributions.
"Regardless of whether Kid Rock says he's only exploring candidacy, he’s selling Kid Rock for Senate merchandise and is a candidate under the law. This is campaign finance law 101," Paul S. Ryan, Common Cause’s vice president for policy and litigation, said in a statement right after the filing. "Given the activities we’ve documented in the complaint, he can't reasonably claim to be merely testing the waters of candidacy and thus exempt from candidate filing requirements. He is a candidate and is obligated to abide by all the rules and make the same disclosures required of everyone else running for federal office."
Tonight's appearance in Detroit is expected to be met by protests from The National Action Network's Detroit chapter, a civil rights group.
The activists are opposed to Kid Rock's display of the Confederate flag, criticism of NFL quarterback Colin Kaepernick and support for President Donald Trump.