White House correspondents saw the most airtime in 2006, according to the Tyndall Report. In addition, "the Pentagon became a primary assignment, with CBS' David Martin and NBC's Jim Miklaszewski attracting Top Five rankings in airtime. In 2005, neither was among the Top 20."

Here's the list of the top 20 most heavily-used reporters in 2006:

Net	Name	Assignment	Minutes
NBC	David Gregory	White House	315
ABC	Martha Raddatz	White House	279
CBS	Jim Axelrod	White House	276
CBS	David Martin	Pentagon	252
NBC	Jim Miklaszewski	Pentagon	222
ABC	Dan Harris	Domestic	220
NBC	Robert Bazell	Medicine	210
NBC	Pete Williams	Justice	204
CBS	Lara Logan	Foreign	198
NBC	Chip Reid	Capitol Hill	196
CBS	Byron Pitts	Domestic	193
NBC	Andrea Mitchell	State Department	188
NBC	Richard Engel	Baghdad/Beirut	187
NBC	Lisa Myers	Investigative Unit	187
ABC	George Stephanopoulos	DC Bureau	186
ABC	Jonathan Karl	Pentagon	185
ABC	Lisa Stark	DC Bureau	184
NBC	Tom Costello	DC Bureau	179
ABC	Jake Tapper	DC Bureau	174
ABC	Brian Ross	Investigative Unit	173