NEW ALBANY, Ind. — An attorney who led the lawsuit that overturned Kentucky’s gay marriage ban wants the Democratic nomination to challenge first-term Republican U.S. Rep. Trey Hollingsworth for his southern Indiana seat in 2018.

The announcement from Dan Canon of New Albany, Indiana, renews attacks on Hollingsworth as “an opportunistic multi-millionaire” who isn’t interested in listening to most people.

Hollingsworth and his father spent more than $3.5 million last year in overcoming attacks labeling him a carpetbagger from Tennessee to win the 9th District seat

Canon represented same-sex couples who were denied marriage licenses in 2015 by Rowan County, Kentucky, clerk Kim Davis. She was jailed for not following court orders.

Hollingsworth’s spokesman declined to comment Thursday on Canon’s candidacy.

Bedford orthodontist Tod Curtis also has announced he’s seeking the Democratic nomination.