KY3: Richardson, Biden to urge supporters to back Obama as second choice

Dave Catanese, the top political reporter on southwest Missouri television, cites sources in Missouri's Obama as saying that New Mexico Governor Bill Richardson will urge his supporters to back Sen. Barack Obama if Richardson does not reach the 15 percent viability threshold.
Delaware Sen. Joe Biden is also reportedly going for Obama as a second choice, as is Rep. Dennis Kucinich.