Former Rep. Joe DioGuardi (R-N.Y.) has decided to challenge Sen. Kirsten GillibrandKirsten Elizabeth GillibrandBudowsky: End the DNC malpractice Overnight Finance: Mulvaney remark on lobbyists stuns Washington | Macron takes swipe at Trump tariffs | Conservatives eye tax cut on capital gains | Gillibrand unveils post office banking bill | GOP chairman pushes banks on gun policies Gillibrand unveils bill to offer banking services at post offices MORE (D-N.Y.), according to the Associated Press.

DioGuardi will announce his candidacy Tuesday at Grand Central Station.

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An accountant by trade, DioGuardi has written repeatedly about the need to control the nation's debt.

DioGuardi was first elected in 1984 and defeated by Rep. Nita Lowey (D-N.Y.) in 1988. His former district just north of New York City is solidly Democratic.

The Republican is the father of Kara DioGuardi, a judge on American Idol.

Former Bush adviser Dan Senor is reportedly considering a GOP challenge to Gillibrand. Billionaire Mort Zuckerman was also considering a bid but has decided against it.