(CNN) - Republican Rep. Mark Kirk will become Illinois' newest Senator when he's sworn in by Vice President Joe Biden on the Senate floor Monday.
His arrival brings the count in the Senate to 58 Democrats and 42 Republicans, creating another hurdle for Democrats facing a stacked legislative agenda.
The Navy Reserve intelligence officer penned an op-ed Monday in the "Chicago Tribune" where he called for bipartisan action to reduce spending, balance the budget and eliminate the use of earmarks. He said the "Spending Control Act" will be the first bill he introduces as Senator.
"Many in Washington want to continue the spend/borrow policy of the past," Kirk wrote. "They ignore the warning signs of more debt, taxes and inflation."
He also called for members of Congress to "cast aside the partisan differences and work across the aisle."
Kirk espoused the same ideas on the campaign trail where he repeatedly called for repeal of the new health care law, an end to congressional earmarks and the continuation of the Bush-era tax cuts.
The five-term congressman from suburban Chicago won a close race against Democrat Alexi Giannoulias, the Illinois state treasurer, to win the seat once held by President Obama. The seat was held the past two years by Democrat Roland Burris, who was appointed by former Illinois Gov. Rod Blagojevich, who was ousted from office.
Kirk will now serve the final weeks of Obama's old term in the Senate as well as a full six-year term after that. Kirk's House seat will remain vacant until Republican Robert Dold is sworn in on January 5.