U.S. Senate candidate Foster Campbell released three years of tax returns on Thursday and called on his opponents to follow suit. 

His tax returns show he made $313,200 in income in 2015, $376,773 in 2014 and $336,326 in 2013. 

In a move mirroring the national presidential race, Campbell said, he was doing it to prove he has nothing to hide. 

Related

One of the most adversarial contests within the crowded race to be Louisiana's next U.S. sen…

"I think it's the right thing to do. If you're serious about representing people they should know how you make your living," Campbell said in a statement. 

But on Thursday, none of his major opponents appeared to be taking the bait. 

Beau Tidwell, a spokesman for Caroline Fayard, the other leading Democrat in the race, said their campaign would not be commenting. 

The two leading Republicans in the race, State Treasurer John Kennedy and Lafayette Congressman Charles Boustany said they had already filed personal information about income on their required financial disclosures.

"Dr. Boustany has fully complied with the public financial disclosure requirements for his office, which are far more stringent than a simple tax return," said his spokesman Jack Pandol. 

Last year, according to Campbell's tax returns he paid about $93,000 in taxes. He earned most of his fortune, about $200,000, from real estate and royalties. He also earned some of his income from his business, Premiere Insurance Company of Bossier City, and other business interests. He donated about $8,000 to charity over the three year period.

The release of tax returns isn't a common practice for statewide candidates. But at the national level, Republican candidate Donald Trump has balked at the tradition of releasing his tax returns, a practice embraced by nearly every major party candidate in modern history. 

Democrats and others have called on Trump to release his tax returns. Trump has said he will not release his tax returns because he's in the midst of an audit. However, the IRS has stated an active audit couldn't prevent someone from releasing the returns. 

Related

Until now, it seemed as if this year’s U.S. Senate race might have less in common with other…

Follow Rebekah Allen on Twitter, @rebekahallen.