Seeing them qualify their statements with "I will renounce my position in office and consider myself a disgrace to my party if I do not fulfill ____". They coul

Seeing them qualify their statements with "I will renounce my position in office and consider myself a disgrace to my party if I do not fulfill ____". They could still reneg, but it's putting up some collateral. Remember how much bad PR Bush I got for "read my lips" ?