Freshman Rep. Sean Duffy (R-Wis.) isn’t doing himself any favors.

Duffy, already a top Democratic target, stumbled in trying to fill out a personal financial disclosure form, according to the Milwaukee Journal Sentinel, which unearthed a series of irregularities.

Duffy’s overall debt was cut in half after he took office, for example. A spokesman explained that the difference was the exclusion of Duffy’s mortgage. The Congressman also forgot to include the sale of several investments. And he could not explain a bump in his district attorney salary prior to his election.

Sensing an opportunity, the Democratic Congressional Campaign Committee pounced on the local news report, which follows another gaffe in which Duffy told a group of constituents that he’s struggling to pay his bills.

“After professing to struggle on his $174,000 Congressional salary, it is unacceptable for Rep. Sean Duffy to hide his financial record, and Wisconsin families deserve an explanation,” DCCC spokeswoman Haley Morris said.