Former New York Mayor Ed Koch, who endorsed and worked for George W. Bush in 2004, is endorsing Obama today, NY1 first reported.
I asked Koch just now what prompted the move.
"The designation of Palin to be vice president," he said. "She's scary."
He said he was alarmed by the report that she'd triggered a conflict with the local librarian in Wasilla, Alaska by inquiring about the possibility of banning books.