(CNN) -- The election victory of Massachusetts Sen.-elect Scott Brown is expected to be certified Thursday, which could allow him to be sworn in as early as Thursday afternoon to replace the late Sen. Ted Kennedy.



Brown's win stripped Democrats of their 60-seat, filibuster-proof majority in the U.S. Senate and raised fears among many congressional Democrats about a potential GOP landslide in November's midterm elections.



Brian McNiff, spokesman for Massachusetts' secretary of state, said the final election returns from last month's special election were delivered to the governor's office Wednesday.



Brown had asked for immediate certification.



In a letter to Massachusetts Gov. Deval Patrick and Secretary of State William Galvin, Brown's attorney says the Republican senator-elect had planned on being sworn in on February 11, but he has been told that several Senate votes will be held before then.



"For this reason, he wants certification to occur immediately," attorney Daniel Winslow wrote.
On what Thursday could the senator-elect be sworn in to replace late Sen. Ted Kennedy? When will he be sworn in? What is being certified on Thursday? What kind of election is this? Where was the Senator from? When will results be delivered? Who is being replaced? What is the name of the Massachusetts senator who is expected to take the late Senator Ted Kennedy's seat?
February 11, Thursday afternoon election victory of Massachusetts Sen.-elect Scott Brown midterm Massachusetts Thursday, the late Sen. Ted Kennedy. Scott Brown
question: On what Thursday could the senator-elect be sworn in to replace late Sen. Ted Kennedy?, answer: February 11, | question: When will he be sworn in?, answer: Thursday afternoon | question: What is being certified on Thursday?, answer: election victory of Massachusetts Sen.-elect Scott Brown | question: What kind of election is this?, answer: midterm | question: Where was the Senator from?, answer: Massachusetts | question: When will results be delivered?, answer: Thursday, | question: Who is being replaced?, answer: the late Sen. Ted Kennedy. | question: What is the name of the Massachusetts senator who is expected to take the late Senator Ted Kennedy's seat?, answer: Scott Brown