A Miami-Dade Circuit Court judge is expected to rule Wednesday on whether Michelle Spence-Jones can run for a third term in November.
The bribery charges against her were dropped and Spence-Jones returned to the commission while receiving back pay and attorney's fees from the city.
Dunn said her bid for reelection violates the city charter. He is asking a judge to disqualify Spence-Jones.
"We're hoping for victory. We're hoping that the will of the people, which was decided upon in 1999, will be respected," said Dunn.
"I think always when everything is said and done, I think the voters should have the right as to who they elect and I think that if we're doing things from a democratic standpoint, we should allow the voters to make a choice. It should not be based upon what a judge is saying," said Spence-Jones.