PRESIDENT'S DEFENDERS, WILL GET 24 HOURS FOR THEIR OPENING

ARGUMENTS, SO WE ARE LOOKING AT SOME POTENTIAL LATE NIGHTS

AHEAD.

>> THEY COULD GO FOR A VERY LONG TIME TODAY, INTO THE WEE HOURS.

>> YOU'RE WATCHING C-SPAN3.

HAVE YOU CONSIDERED AMBIEN?

COMING UP, COVERAGE OF THE SENATE IMPEACHMENT TRIAL.

IF IT GOES LATE INTO THE NIGHT, COVERAGE WILL CONTINUE ON

"C-SPAN AFTER DARK."

( ROMANTIC MUSIC PLAYING ) TONIGHT, INDULGE YOUR FANTASIES

THAT THIS WILL BE A FAIR TRIAL.

WATCH AS THE PROSECUTORS MAKE ARGUMENTS ORALLY, WHILE THE

PRESIDENT'S DEFENDERS YANK THEIR ARGUMENTS OUT ANALLY.

THEN, AFTER "C-SPAN AFTER DARK," JOIN US TOMORROW MORNING FOR

"C-SPAN WALK OF SHAME."

♪ ♪ ♪ ( LAUGHTER )

>> IT'S "THE LATE SHOW WITH STEPHEN COLBERT."