des moines iowa kick 2016 election season one week democratic presidential front-runner hillary clinton try erase doubt judgment raise rival bernie sanders monday dig deep years govern experience cnn town hall meet sanders argue judgment clinton experience crucial quality next commander-in-chief clinton response evoke president barack obama say select secretary state give approval judgment somebody prove prove fighter clinton say anxious put threat democratic socialist clinton face challenge convince democratic voters sway sanders populist rhetoric stick despite clamor candidates outside political establishment town hall drake university lack feel normal debate feature separate appearances sanders former maryland governor martin malley clinton three take audience question event clinton animate usual raise voice make point sanders make audience laugh joke overall tone polite contrast rancorous fourth debate three last week sanders cite clinton 2002 senate vote authorize iraq war prior support canada-to-texas keystone pipeline evidence experience misguide clinton shift position issue sanders oppose start experience important judgment also important say sanders also defend call raise tax fund medicare-for-all program u.s. infrastructure tuition-free college education raise tax yes say sanders vermont senator say money would actually save money families would long pay health insurance premiums clinton make case time secretary state senator new york make experience town hall stage monday push back sanders judgment argument evoke obama remain popular democratic voters critical iraq war vote two compete 2008 obama end ask secretary state clinton say trust judgment work side side four years clinton lose democratic primary obama 2008 months clear front-runner party nominee time around opinion poll show surge support sanders recent weeks argue sanders goals issue social inequality laudable unobtainable lack experience tackle wide range issue white house pick issue want work get ready take every issue come way include predict clinton tell jewish federation great des moines monday clinton also go great lengths town hall criticize republican front-runner donald trump particularly insult minorities start mexicans muslims say clinton get much-needed praise president obama politico interview publish monday exactly week iowans hold nation first nominate contest november election never explicitly criticize sanders whose campaign focus pledge redress social inequality contain wall street excesses obama praise clinton experience suggest several time clinton message ground realism extraordinarily experience know wicked smart know every policy inside sometimes could make cautious campaign prose poetry obama say edit mary milliken sap sponsor coverage independently produce staff reuters news agency experience vs. judgment clinton sanders vie pivotal iowa vote