WHITE HOUSE (AP) -- Calling his service to President Bush "the joy and honor of a lifetime," Karl Rove has announced that he will leave the White House at the end of August.
Rove is considered the architect of Bush's two successful White House campaigns.
The president, standing with Rove on the South Lawn of the White House today, said Rove has been a "dear friend."
Rove joins a lengthening line of senior officials heading for the exit in the Bush administration.
The president referred to his own dwindling time in office, telling Rove that he would be "on the road behind you in a bit."