GOP

A solid Cruz win in Wisconsin would narrow Trump's path to the nomination, heap pressure on the billionaire to sweep the remaining winner-take-all primaries this spring, and increase the chances of a contested party convention in July.

Republican presidential front-runner Donald Trump, in interviews this week, suggested the U.S. should scale back its role in the alliance nearly seven decades after it was launched in the aftermath of World War II. Complaining that America is spending too much money on NATO, Trump said that the financial burden has to change.

As the world grappled with a new wave of attacks in Europe, Donald Trump and Hillary Clinton traded wins with their chief rivals on Tuesday in primary contests across three Western states.

Trump's victories this week make it much more likely that he'll be the party's presidential nominee, probably facing off in November with Democrat Hillary Clinton. That raises the question of how a so-far "self-funding" Trump would pay for what could be a billion-dollar campaign.

The day after high-stakes contests in five states, the math and momentum point to a Donald Trump Republican presidential nomination as GOP officials grapple with whether to embrace the billionaire businessman or rally behind a longshot alternative.

The Supreme Court fight is about to get personal.

Florida Sen. Marco Rubio was among the Republican Party's biggest stars when he burst onto the national stage in the tea party wave of 2010. Now, he is facing a home-state showing on Tuesday that could devastate his 2016 presidential campaign and damage his political brand for years to come.

"There's no question that the decisions that were made were made to benefit the two main Florida sons -- Bush and Rubio," said Joe Gruters, vice chair of the Republican Party of Florida and co-chair of Trump's Florida campaign. "I'm sure they weren't expecting the Trump movement to be so strong. This is exactly the opposite of what they wanted.

With characteristic brashness, Republican presidential front-runner Donald Trump has staked out uncompromising positions on Asia policy that could potentially roil U.S. relations with the region if he won the White House.

Should he succeed, Kasich would deprive Donald Trump of the 66 winner-take-all delegates, slowing the businessman's path toward clinching the GOP nomination outright.