washington democratic presidential front-runner hillary clinton pivot general election match-up republican candidate donald trump thursday say dangerously unpredictable qualify president confident finally close defeat u.s. senator bernie sanders vermont democratic nomination clinton turn heavy fire trump run even national poll voters look ahead nov. presidential election republican side trump promote top aide paul manafort serve campaign manager chief strategist trump campaign say corey lewandowski trump aide campaign manager retain title continue oversee day-to-day operations campaign say addition trump hire veteran republican lawyer a.b culvahouse help vet potential vice presidential run mat source close campaign say cnn interview clinton use example apparent down egyptair plane paris cairo say trump would lack skills bring together u.s. ally respond global threats know hard job know need steadiness well strength smart conclude qualify president unite state clinton say trump republicans presumptive presidential nominee intensify criticism clinton lob personal attack husband former president bill clinton clinton former u.s. secretary state say would resolutely refuse respond trump goad say whatever want say say egyptair crash reinforce need american leadership trump propose temporary ban muslims enter unite state send wrong signal countries washington need work fight islamic militants say lot things provocative actually make important task build coalition bring everybody table defeat terrorism difficult say send message disrespect send message make situation inside countries difficult clinton suggest democratic race nearly insurmountable lead delegate nominate convention despite sanders insistence stay race nominee party say already do effect way be say sanders eventually help unify democratic party prolong nomination fight absolutely commit part part senator sanders part say sanders campaign rebuff clinton nudge get race point recent victories past three weeks voters indiana west virginia oregon respectfully disagree secretary clinton expect voters remain eight contest also disagree sanders spokesman michael briggs say trump step efforts rally republican loyalists behind campaign win divisive primary fight leave party rupture capitol hill manafort trump aid meet conservatives house representatives members freedom caucus group canvass policy ideas manafort reach ideas policy several freedom caucus members make suggestions say republican representative scott desjarlais tennessee go well encourage think trump team recognize relevance freedom caucus influence think actually despite early skepticism members think freedom caucus board receive manafort representation trump well desjarlais say manafort also meet u.s. senator mike lee utah tea party republican big backer u.s. senator ted cruz texas president lee express concern trump candidacy spokesman lee say u.s. senator jeff sessions alabama key trump adviser also meet clinton call trump unsteady president