worst his name barack obama we ewent on to win. the first debates erin aren t always determinative. i think i guess we think this is starting early but this is important. joan walsh, karen done one of the experienced debate precip specialists prpg hillary clinton for debates and president obama for debates as well. hopeful he learned from thefers time out. mark preston senior political analyst. mark starting with you. warren set the tone. she is the leader, center, spotlight. this is how it is i own it. okay. but who has the most to gain and lose tonight. en on the debate stage, anyone warren has the most to lose because she is considered the front runner. she has to look that way. she has to look that way and can t make a stumble. i would say the bottom third looking at the likes of tim ryan and tulsi gabbard and folks at the 1% on the stage tonight unless they have a moment that can go virile in the next couple