[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/07/30/art.boteddy0730.gi.jpg caption="Sen. Kennedy has written a letter to Massachusetts Gov. Deval Patrick and other state leaders."]
WASHINGTON (CNN) - Sen. Ted Kennedy, who is battling brain cancer, is urging Massachusetts officials to change a law to allow for an immediate temporary replacement should a vacancy occur for one of his state's two Senate seats.
Under a 2004 Massachusetts law, a special election must be held 145 to 160 days after a Senate seat becomes vacant. The winner of that election would serve the remainder of a senator's unexpired term.
Kennedy, a Democrat who has represented Massachusetts in the Senate for nearly 47 years, was last re-elected in November 2006. His six-year term ends in January 2013.
In a letter to Gov. Deval Patrick and other state leaders, Kennedy said he supports the current law, "[b]ut I also believe it is vital for this Commonwealth to have two voices speaking for the needs of its citizens and two votes in the Senate during the approximately five months between a vacancy and an election."
Read: Kennedy's letter
Kennedy, 77, asks the governor and state leaders to "amend the law through the normal legislative process to provide for a temporary gubernatorial appointment until the special election occurs," according to the letter, dated July 2.