Drama in the court room.  Claims that evidence was withheld. A witness has "switched sides?:

Sen. Ted Stevens accused prosecutors of withholding evidence in his gift-giving trial after a weekend in which a key government witness apparently switched sides mid-trial and told defense attorneys that important facts were being ignored.

In court documents filed just before midnight Sunday, the Senate's longest-serving Republican asked a judge to dismiss the corruption case or declare a mistrial.

Stevens is charged with lying on Senate financial disclosure forms about more than $250,000 in free home renovations and other gifts he received from VECO Corp., a powerful Alaska oil pipeline contractor.

Former VECO employees have testified that they spent countless hours working on the senator's home, building a balcony, a custom steel staircase, a new roof and more. Such testimony was expected to continue Monday as prosecutors tried to persuade jurors that Stevens must have known he was getting freebies.