WASHINGTON (CNN) – Republican Rep. Mark Kirk may make his run for the Senate in 2010 official next week.
His office said Wednesday that the congressman would announce a "statewide candidacy" Monday morning at a suburb outside Chicago.
Kirk has reportedly been seriously weighing a bid for the seat currently filled by embattled Sen. Roland Burris, who announced on Friday that he would not run for election. Burris was appointed by former Gov. Rod Blagojevich, who was arrested on corruption charges that he tried to sell President Obama's Senate seat.
The state Republican Party chairman, Andy McKenna, was also considering running for the Senate seat, but announced Monday that would "not oppose" Kirk if the congressman decided to run, as GOP officials have hoped.