henniker n.h. campaign republican presidential nomination take nasty turn wednesday billionaire businessman donald trump accuse rival ted cruz fraud field candidates narrow ahead next week new hampshire primary rand paul u.s. senator kentucky libertarian philosophy pull republican race conservative rick santorum also exit race wednesday endorse u.s. senator marco rubio florida paul santorum former senator pennsylvania poorly monday iowa caucus cruz trump rubio finish second third caucus first state-by-state nominate contest ahead nov. election replace democratic president barack obama trump real estate mogul former reality tv star go twitter wednesday accuse conservative u.s. senator texas steal victory iowa cruz team hit back tell trump seek help addiction social media site two men go head-to-head voters new hampshire cruz evangelical christian credentials likely helpful iowa opinion poll show trump roughly 20-point lead new hampshire next tuesday primary new hampshire race heat democratic presidential contenders face late wednesday town hall-style event host cnn former secretary state hillary clinton narrowly beat bernie sanders u.s. senator vermont iowa trump call nullification cruz iowa victory new vote state ted cruz win iowa steal trump say series tweet poll wrong get far vote anticipate bad oh voter fraud know politicians brutal trump say late rally little rock arkansas bunch dishonest cookies want tell you trump refer email cruz campaign send monday imply another republican candidate ben carson drop race iowa backers urge vote texan instead cruz late apologize email trump also accuse cruz team send mailer design look like official electoral document scare iowa voters turn caucus accusations late aggressive tactic trump court controversy attack candidates urge temporary ban muslims enter unite state brand mexican immigrants criminals obama visit mosque near baltimore wednesday declare attack islam attack faiths move counter rhetoric trump republican candidates alienate muslims cruz campaign say trump complaint cry attention senator come behind poll win monday cruz spokesman suggest seek help twitter addiction surprise donald throw yet another temper-tantrum like yet another trumpertantrum cruz say understand donald find hard lose end day iowa people speak cruz support iowa much conservative christian constituency help santorum victory iowa caucus 2012 presidential campaign santorum fail take 2016 race say fox news suspend run call rubio bear leader endorsement come rubio come attack rival seek curry favor new hampshire rubio say look forward team santorum want use often will work us rubio say early wednesday paul become second republican drop race since iowa caucus former arkansas governor mike huckabee additional report amy tennery new york doina chiacu susan heavey eric beech washington roberta rampton maryland write alistair bell edit bill trott peter cooney sap sponsor content independently create reuters editorial staff fund part sap otherwise role coverage republican campaign white house turn nasty field narrow