republican lawmakers operatives donors grapple whether support donald trump effectively clinch party presidential nomination week two remain rival ted cruz john kasich drop white house race trump seek rally fracture party behind many prominent republicans get behind reality tv star real estate developer weigh options still others say might vote nov. general election hillary clinton likely democratic nominee bill achtmeyer boston-based founder consult firm parthenon group among consider possible vote clinton former secretary state former first lady able move center think creatively thoughtfully husband bill clinton ... boy would hard time base know today vote hillary versus trump espouse say achtmeyer donate 200,000 republicans last decade another republican donor david beightol washington lobbyist raise money year presidential bid former florida governor jeb bush say lean toward vote trump could support clinton yet lot choice beightol say u.s. elections cycle party insiders quickly coalesce around candidates effectively sew nomination trump bombastic rhetoric unorthodox campaign lack experience government leave party divide new york billionaire vow deport illegal immigrants build wall along mexican border also say would temporarily bar muslims enter country way combat terrorism republican former presidents george h.w bush george w. bush plan endorse anyone white house race year spokesmen tell reuters party presidential nominee 2012 mitt romney attend republican national convention july aide say former massachusetts governor deliver blister attack trump march party 2008 nominee u.s. senator john mccain arizona say would support eventual nominee presumptively donald trump say mccain senate campaign spokeswoman lorna romero mccain tell supporters arizona last month trump top republican ticket make re-election hard accord record obtain politico state large hispanic population wednesday fresh win indiana primary drive rival race trump pledge unify party say get call people criticize past want back him.supporters trump never hold elective office say could ease concern lack experience choose well-known run mate representatives scott desjarlais tennessee chris collins new york suggest former u.s. secretary state condoleezza rice rice respond request comment trump tell cnbc thursday 40 percent chance vice presidential pick would former republican presidential rival backers say trump could mend tie ally cruz strong challenger trumpet true conservative meet lawmakers person heat campaign trump dub u.s. senator texas lyin ted cruz supporters capitol hill tie conservative activists tea party group could help trump raise money turn voters desjarlais say meet trump person would improve impressions representative raul labrador cruz backer conservative leader idaho tell radio station saw trump favor political establishment even though run outsider say trump would likely appoint conservative u.s. supreme court priority many political right clinton chance labrador say opinion choice two republicans grapple whether back trump white house