Democrat Mark Begich has defeated convicted felon and 40-year Senate veteran Ted Stevens, therefore unseating the longest-serving Republican in Senate history.
Right now, Begich has a lead of 3,724 votes with approximately 2,500 votes left to count. The margin between Begich and Stevens is wide enough that an automatic recount will not be triggered; if Stevens wants a recount, his campaign will have to pay for one, making it unlikely.
This brings the Senate Democratic caucus to 58 members, with two races (MN and GA) still outstanding.
Congratulations, Senator-Elect Begich.