During a Obama campaign conference call with reporters yesterday, Senator Claire McCaskill said it would be “inappropriate and awkard and wrong for any of us to tell Senator Clinton when it is time for the race to be over.”

She said the decision is Clinton’s alone.

Here’s the complete conference call (McCaskill’s comments are around -18:00):

Also featured on the call was Senator John Kerry, Massachusetts Governor Deval Patrick, Arizona Governor Janet Napolitano, and Obama campaign manager David Plouffe.

Here is the Clinton campaign’s conference call also from Wednesday: