Here's the AP write-up of Caldwell's endorsement:
Houston minister Kirbyjon Caldwell endorses Obama
HOUSTON - An influential Houston minister who has long been a spiritual adviser to President George W. Bush says he will endorse Barack Obama's bid for the presidency.
The Rev. Kirbyjon Caldwell, senior pastor of Windsor Village United Methodist Church, said Saturday that he's backing the Illinois senator because of Obama's "character, confidence and courage."
Obama, a Democrat, is electable and "would do a wonderful job to bring people together to pursue a common vision we all have," said Caldwell, who said his support is personal and not connected to his role as pastor of the 14,000-member church.
However, Caldwell told his congregation that Obama may pay a visit to his church.
Caldwell, whose relationship with the president began when Bush was governor of Texas, introduced Bush at the 2000 Republican National Convention and gave the benediction at both of his inaugurations.
Caldwell said he called Bush to inform him of his decision to support Obama and that the president was "OK" with it, adding that the minister's presidential choice would not affect their relationship.