washington rarely two u.s. presidential front-runners need run mat hillary clinton donald trump democratic republican leaders 2016 white house race unusually unpopular nationally poll show despite success voters respective party clinton struggle generate excitement candidacy assuage voter concern trustworthiness trump fare badly among women minorities poll weaknesses increase importance vice presidential pick could potentially help rally support key demographics ahead nov. vote get party nomination hispanic advocacy group lobby clinton choose hispanic run mate person often mention julian castro house urban development secretary one party rise star oppose liberal activists accuse favor wall street firm sale distress mortgage group start online petition castro candidacy anger latino victory fund nonpartisan advocacy group push latino vice-presidential nominee attack secretary castro completely unfounded short sight serve pit us say cristobal alex fund president u.s. hispanic chamber commerce call clinton choose castro democratic strategist joe velasquez clinton supporter say hispanic run mate could make difference swing state like florida colorado nevada virginia large hispanic populations poll show hispanic voters overwhelmingly dislike trump part comment liken illegal immigrants criminals u.s. labor secretary tom perez also mention possible latino pick clinton decision clear-cut give trump unpopularity moderate republicans may want vice-president wrest away voters someone like tim kaine senator virginia personally oppose abortion support woman right choose new jersey senator cory booker close tie financial sector immediate comment castro kaine perez booker clinton though could give high priority win liberal democrats see pro-wall street flock rival senator bernie sanders vermont sherrod brown senator ohio fierce opponent global trade deal senator elizabeth warren massachusetts fierce critic bank industry name possible vice president pick brown warren respond request comment clinton campaign confirm report boston globe clinton would include least one woman short list vice presidential candidates vet democratic strategist chris kofinis skeptical clinton need spend much time appease liberal wing party win nomination much people make race clinton sanders ideological death match donald trump bring democratic party together anyone ever do say trump view unfavorably 80 percent democrats accord recent reuters/ipsos track poll democrats fear increasingly bitter clinton-sanders battle fracture party jim manley former top aide senate minority leader harry reid say clinton pick view prism among things ability bring sanders voters reuters/ipsos poll suggest clinton would struggle attract sanders voters ask would clinton nominee 15 percent sanders supporters say would stay home election day 16 percent say would vote republican nominee forty-nine percent say would vote clinton clinton trump campaign refuse comment vice-presidential speculation say remain focus win respective nominate contest clinton hold command lead among party delegate pick party nominee sanders pledge keep fight trump may republican nomination lock summer beat challenge texas senator ted cruz ohio governor john kasich run distant third republican race typically vice-presidential selections vet weeks candidate emerge party nominee announce shortly party conventions summer trump polarize candidacy could make job find run mate difficult much campaign season many republican establishment along well-funded political committees look ways keep trump win republican nomination trump state preference establish office-holder rather political neophyte like specifically list wisconsin governor scott walker florida senator marco rubio kasich walker endorse cruz laugh ask prospect noncommittal rubio repeatedly reject idea kasich last week say zero chance play second fiddle trump despite mount speculation would ideal candidate deep government experience ohio crucial role general election swing state source close kasich tell reuters governor interest work trump two agree much cruz say week would trump run mate tell reporters hollywood florida wednesday trump-kasich ticket lose hillary clinton tony fratto republican strategist say trump may force turn guy end career people believe future someone last act nothing lose accept offer trump might include new jersey governor chris christie one establishment politicians campaign trump florida governor rick scott endorse trump final term office christie ask prospect interview new jersey radio station thursday way think things never say never say name link trump include former new york mayor rudolph giuliani alabama senator jeff sessions trump adviser ben carson retire neurosurgeon former presidential candidate immediate comment sessions scott giuliani armstrong williams close adviser carson say former white house hopeful want slot point interest politics ... none williams say think trump look someone government experience someone political unpopularity clinton trump put spotlight potential run mat