washington new jersey governor chris christie former business executive carly fiorina end presidential campaign wednesday narrow field challenge front-runner donald trump race 2016 republican nomination christie 53 say facebook post leave race without ounce regret day combative republican sixth-place finish new hampshire primary raise doubt viability candidate fiorina 61 former hewlett-packard chief executive say facebook post would suspend campaign woman republican field place seventh new hampshire one series state-by-state nominate contest nov. election succeed democratic president barack obama trump remain opponents mainstream republicans likely benefit departures leave seven republicans field 17 candidates trump new hampshire republican primary almost 20 point fifth-place finish u.s. senator marco rubio florida hop emerge trump main rival surprise third-place show iowa last week leave trump without clear challenger among so-called establishment candidates democratic side u.s. senator bernie sanders vermont democratic socialist easily defeat former secretary state hillary clinton new hampshire primary victories party candidates consider outsiders testify sizable share american voters upset slow economic recovery immigration america place world will shake washington trump 69 billionaire businessman double-digit lead conservative senator ted cruz texas opinion poll next republican contest south carolina primary feb. 20 accord real clear politics average opinion poll christie pour much campaign resources new hampshire consider good show critical percent vote tuesday despite pugnacious performance republican debate last weekend christie need drop short money organization viable south carolina beyond say monmouth university pollster patrick murray christie certainly hurt trump steal tell like thunder christie also out-organized ultimate retail politics state murray say sanders court african-americans trump victory new hampshire show pundits wrong think would quickly self-destruct base penchant insult imprecise plan presidency lose last week cruz first nominate contest iowa caucus ohio republican governor john kasich finish second new hampshire follow cruz former florida governor jeb bush rubio odds trump win white house see extremely long shoot improve significantly victory new hampshire online bet site ladbrokes plc say trump 9/2 compare 7/1 last week mean chance victory november 18 percent clinton still best odds become president 50/50 ladbrokes say democratic side sanders 74 court african-american vote wednesday breakfast civil right leader rev al sharpton restaurant new york city harlem neighborhood clinton 68 currently strong support black voters crucial democratic primary south carolina feb. 27. sharpton obama meet restaurant obama successful 2008 presidential campaign piece symbolism sanders try expand appeal beyond liberals u.s. northeast concern january next year first time american history black family move white house sharpton baptist minister television talk-show host tell reporters afterward want black concern move must front center marginalize senator sanders come morning make clear ignore say sharpton discuss spate police shoot black males issue senator sharpton say would endorse candidate meet clinton congressional black caucus endorse clinton thursday members active support campaign washington post report cite u.s. democratic representative gregory meeks new york chairman cbc political action committee clinton long history support civil right also benefit husband bill clinton popularity black community presidency although become strain fierce 2008 primary battle obama clinton campaign highlight popularity among black latino voters say statement tuesday difficult impossible democrat win nomination without strong level support among african-american hispanic voters republicans christie fiorina drop white house bid