WASHINGTON - Freshman Republican Rep. Lee Zeldin outraised each of the two Democrats vying to challenge him in campaign contributions over the past three months, his aide said Wednesday, for what's expected to be a hotly contested 1st Congressional District race next year.

Zeldin, 35, an attorney and former state senator from Shirley, has raised $585,507 for his re-election campaign since June, giving him $1.2 million in cash on hand, according to spokeswoman Jennifer DiSiena.

Since the beginning of the year, Zeldin has raised nearly $1.7 million, she said.

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On Monday, Democrat David Calone, 42, a Setauket venture capitalist and chairman of the Suffolk County Planning Commission, told Newsday he raised $430,000 in the last quarter and has $820,000 in cash on hand.

Southampton Supervisor Anna Throne-Holst, 55, a Sag Harbor Independent seeking the Democratic nomination to face Zeldin, said she raised $339,000 in the third quarter and has $783,000 in the bank for her campaign.

The three politicians disclosed those summary figures from campaign finance reports that they must file with the Federal Election Commission by the end of the day Thursday.

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At this early stage, with a Democratic primary months away, Washington campaign handicappers rate the congressional race on Long Island's East End as either leaning Republican or as a tossup.

"While Congressman Zeldin is grateful for all of the support and encouragement he receives every day," DiSiena said in a statement, "his primary focus remains on being one of the hardest working elected officials around."