Republican White House Frontrunner Donald Trump

Donald Trump alleged Tuesday that White House rival Ted Cruz's father was with John F. Kennedy's killer shortly before the US president was assassinated, prompting Cruz to brand the Republican frontrunner a "pathological liar."

Republican Donald Trump and Democrat Hillary Clinton scored big wins in Tuesday's presidential primaries, helping to consolidate their frontrunner status in the 2016 White House race.

Republican White House hopeful Ted Cruz said on Tuesday he was the party's only hope to defeat frontrunner Donald Trump, calling on his rivals to drop out of the race.

White House hopefuls Ted Cruz and Marco Rubio unleashed a barrage of attacks against Donald Trump during Thursday's raucous Republican debate as they sought to halt the billionaire frontrunner's seemingly relentless march to the party's nomination.

Donald Trump and his flummoxed rivals take the stage on Thursday for a crucial presidential primary debate, with fellow White House hopefuls wondering what magic words can stop the brash billionaire's march toward the Republican nomination.

Donald Trump's wife Melania, in a rare TV interview, on Wednesday defended her husband's fiery rhetoric on immigration, denying the Republican White House frontrunner had painted Mexican migrants as rapists.

Only five Republicans were left in the race for the White House on Sunday, and frontrunner Donald Trump hammered home the idea that he is the only one who could defeat Democrat Hillary Clinton in November.

Republican White House frontrunner Donald Trump said on Tuesday he will start spending millions of dollars in hard-hitting campaign advertising in the run-up to the first votes in the 2016 presidential race.

White House contender Donald Trump released a statement Monday by his physician who described the Republican frontrunner as being in excellent health, with extraordinary strength and stamina and "no significant medical problems."

Republican presidential frontrunner Donald Trump has unleashed a stunning verbal assault on his nearest competitor Ben Carson, saying US voters were "stupid" to believe the doctor's moving personal narrative and comparing him to a pedophile.

Donald Trump reiterated his pledge during Tuesday's Republican presidential debate to deport millions of undocumented workers, a plan trashed by rivals including Jeb Bush, who warned overzealous anti-immigrant sentiment would be a gift to Democrats.

Step aside, Donald Trump. The brash billionaire must now share frontrunner status in the US Republican presidential nominations battle with retired neurosurgeon and fellow political outsider Ben Carson, fresh polling showed today.

Donald Trump, the longtime frontrunner in the Republican presidential race, geared up for battle Wednesday in a third nationally televised candidates' debate, with outsider Ben Carson hot on his heels.

Republican White House frontrunner Donald Trump and nine other 2016 hopefuls do battle today in their third nationally televised primary debate, as rivals seek a political opening against the caustic billionaire.

Republican White House hopefuls Donald Trump and Jeb Bush locked horns after frontrunner Trump implied that former president George W. Bush shared some blame for the September 11, 2001 attacks.

Donald Trump alleged Tuesday that White House rival Ted Cruz's father was with John F. Kennedy's killer shortly before the US president was assassinated, prompting Cruz to brand the Republican frontrunner a "pathological liar."

Republican Donald Trump and Democrat Hillary Clinton scored big wins in Tuesday's presidential primaries, helping to consolidate their frontrunner status in the 2016 White House race.

Republican White House hopeful Ted Cruz said on Tuesday he was the party's only hope to defeat frontrunner Donald Trump, calling on his rivals to drop out of the race.

White House hopefuls Ted Cruz and Marco Rubio unleashed a barrage of attacks against Donald Trump during Thursday's raucous Republican debate as they sought to halt the billionaire frontrunner's seemingly relentless march to the party's nomination.

Donald Trump and his flummoxed rivals take the stage on Thursday for a crucial presidential primary debate, with fellow White House hopefuls wondering what magic words can stop the brash billionaire's march toward the Republican nomination.

Donald Trump's wife Melania, in a rare TV interview, on Wednesday defended her husband's fiery rhetoric on immigration, denying the Republican White House frontrunner had painted Mexican migrants as rapists.

Only five Republicans were left in the race for the White House on Sunday, and frontrunner Donald Trump hammered home the idea that he is the only one who could defeat Democrat Hillary Clinton in November.

Republican White House frontrunner Donald Trump said on Tuesday he will start spending millions of dollars in hard-hitting campaign advertising in the run-up to the first votes in the 2016 presidential race.

White House contender Donald Trump released a statement Monday by his physician who described the Republican frontrunner as being in excellent health, with extraordinary strength and stamina and "no significant medical problems."

Republican presidential frontrunner Donald Trump has unleashed a stunning verbal assault on his nearest competitor Ben Carson, saying US voters were "stupid" to believe the doctor's moving personal narrative and comparing him to a pedophile.

Donald Trump reiterated his pledge during Tuesday's Republican presidential debate to deport millions of undocumented workers, a plan trashed by rivals including Jeb Bush, who warned overzealous anti-immigrant sentiment would be a gift to Democrats.

Step aside, Donald Trump. The brash billionaire must now share frontrunner status in the US Republican presidential nominations battle with retired neurosurgeon and fellow political outsider Ben Carson, fresh polling showed today.

Donald Trump, the longtime frontrunner in the Republican presidential race, geared up for battle Wednesday in a third nationally televised candidates' debate, with outsider Ben Carson hot on his heels.

Republican White House frontrunner Donald Trump and nine other 2016 hopefuls do battle today in their third nationally televised primary debate, as rivals seek a political opening against the caustic billionaire.

Republican White House hopefuls Donald Trump and Jeb Bush locked horns after frontrunner Trump implied that former president George W. Bush shared some blame for the September 11, 2001 attacks.