Byrd To Break Tenure Record On Wednesday : It's All Politics On Wednesday, Sen. Robert Byrd (D-WV) becomes Congress' longest-serving lawmaker in history.

Byrd To Break Tenure Record On Wednesday

On Wednesday, Nov. 18, Sen. Robert Byrd will become the longest-serving member of Congress in history.

He will break the record of Carl Hayden, an Arizona Democrat, who spent 20,773 days in office -- Hayden served in the House from 1912 to 1927 and the Senate from 1927 to 1969.

Byrd, a Democrat from West Virginia, was first elected to the House in 1952. Six years later he won his initial Senate race. He won a ninth full Senate term in 2006 -- something no one else has ever accomplished. Here's more, according to CQ's Kathleen Hunter:

He has cast more votes and held more leadership positions -- including majority leader, minority leader, president pro tempore, majority whip and secretary of the majority -- than any other senator.

Byrds turns 92 years old on Nov. 20.

UPDATE: For more on Arizona's Carl Hayden, whose record is about to be eclipsed, check out this post by NPR's Mark Memmott in his The Two Way blog.