Facing faltering poll numbers, Republican presidential candidate Jeb Bush took jabs at Donald Trump.
Trump described Jeb Bush as "a low-energy person" and someone who is "out of touch" on women's health issues.
An Internet meme running as an independent for president in 2016 is polling at 9 percent against Clinton and Trump.
The former Maryland governor appeared alongside mostly immigrant workers trying to organize a union at a Trump hotel in Las Vegas.
Hillary Clinton has maintained that her use of a private server to handle official emails while serving as secretary of state "was legally permitted."
In both the U.S. and Britain, party leadership contests have been upended by the popularity of marginal candidates.
Donald Trump may have 24 percent of the national GOP support, but most think another nominee would stand a better chance of winning the White House.
The U.S. State Department has so far identified 305 emails from Hillary Clinton's private server used while she was secretary of state to be reviewed for potentially classified information, the agency said in a court filing.
Sanders is the favorite among Democrats in the unofficial Iowa State Fair poll, by just 1 percent.
Leaders with the AFL-CIO pressed Clinton and other candidates at a meeting last month on issues such as trade and wages.
"I find it somewhat curious that Jeb Bush is doubling down on - defending - his brother's actions in Iraq," she said at a press conference.
President Barack Obama and Bill Clinton will be later joined by Hillary Clinton at an evening celebration marking the birthday of civil rights activist and American businessman Vernon Jordan.
The Iran nuclear deal "isn’t a deal at all,” the Florida senator and presidential candidate said. “It is a string of concessions to a sworn adversary of the United States.”
From Guantanamo to Iraq, Jeb Bush is not afraid to defend former President George W. Bush's choices.
Though foreign firms like Maersk and Alibaba have piled on multibillion-dollar stock buybacks, U.S. companies lead by a mile.
A friendly game of golf between GOP presidential candidates Donald Trump and Sen. Rand Paul quickly devolved into bickering.
Hillary Clinton reached for the youth vote by asking for emojis about student debt. It didn't go well.
While a poll shows 65 percent of Americans support the idea, just one Republican presidential candidate seems to agree.
More than half of registered voters said Hillary Clinton's emails should be subject to a criminal probe for potentially releasing classified data.
The real estate mogul mended fences with Fox News after a weeklong feud with Megyn Kelly -- and walked back his threat of a third-party run.
Jeb Bush called Hillary Clinton's record as secretary of state a "failure."
The FBI retrieved at least two thumb drives containing about 30,000 work-related emails, according to a U.S. official.