U.S. presidential candidates Hillary Clinton and Donald Trump kicked off a fierce general election battle, with Democrats accusing Trump of erratic behavior and the Republican threatening to bring up old Clinton scandals.
Clinton, the former secretary of state, made history when she became the first woman to lead a major political party in its quest to capture the U.S. presidency. Big primary election wins on Tuesday in California and elsewhere catapulted her to victory over Democratic opponent Bernie Sanders.
If elected on Nov. 8, the 68-year-old would return the Clinton family to the White House 16 years after her husband, Bill Clinton, completed two terms as president.
All signs point toward a negative campaign for five months as Clinton accuses Trump of being temperamentally unfit to serve and the New York billionaire charges Clinton has a dark past with shades of corruption and a weak record as President Barack Obama's first-term secretary of state.
The Clinton campaign drew on critical comments from Republicans themselves to portray the 69-year-old Trump as not fit for the Oval Office after the real estate developer repeatedly accused a Mexican-American judge of showing bias against him because of his ethnic heritage.
"The most effective thing to do with Donald Trump is just to get his words out there and let him speak for himself," Clinton campaign manager Robby Mook told CNN on Wednesday.
Mook charged Trump with a history of "erratic behavior," the same language leveled by the Obama campaign in its defeat of Republican nominee John McCain in 2008.
Trump, smarting from criticism from fellow Republicans about his attacks on U.S. District Judge Gonzalo Curiel, gave a carefully crafted primary race victory speech on Tuesday night laying out his plan of attack.
To keep him from straying off message, he used a Teleprompter and avoided his typical stream-of-consciousness delivery.
Trump said money given to the Clinton Foundation charity from foreign donors has earned the Clintons millions of dollars and had a corrupting influence when Hillary Clinton was secretary of state and used a private email server to conduct official business.
"Hillary Clinton turned the State Department into her private hedge fund - the Russians, the Saudis, the Chinese - all gave money to Bill and Hillary and got favorable treatment in return. It's a sad day in America when foreign governments with deep pockets have more influence in our own country than our great citizens," Trump said.
He said he would give a speech next week "discussing all of the things that have taken place with the Clintons."
A Reuters/Ipsos poll released on Tuesday showed Clinton leading Trump by 10 percentage points nationally, little changed from a week earlier.
Both Clinton and Trump have work to do to unite their parties behind them but the Democrat appeared to face the easier path with Sanders, a leftist U.S. senator from Vermont, nearly out of options to challenge her.
Trump has an uphill battle, with many party leaders still opposed to him. U.S. House of Representatives Speaker Paul Ryan described Trump's remarks about the judge as a "textbook definition of a racist comment" but said he would still support him.
Ryan met behind closed-doors on Wednesday with House Republicans. An aide said Ryan "discussed with his members the thinking behind his endorsement (of Trump) and how to move forward" and reiterated he had confidence Trump would support the House Republican agenda.
Republicans complain that Trump still engages in petty battles with former rivals and is way behind in building a fund-raising organization. Trump is to meet on Thursday in New York with top fund-raisers of the Republican National Committee, a party official said.
"We like parts of Donald Trump's message but he does need to act more presidential and he does need to transition to a general election approach," U.S. Senator Susan Collins, a Maine Republican, told CNN.
"He is the one who keeps bringing up grievances against those who ran against him. He needs to unite the party and he needs to unite the country," she said.
Clinton edged Sanders out in a rough-and-tumble battle that stretched over four months and 50 states. She won support, especially among older voters, with a more pragmatic campaign focused on building on the policies of her fellow Democrat, Obama.
Democratic Party elites are lined up squarely behind Clinton, including most likely Obama, who may endorse her as early as this week. Pressure will mount on Sanders to exit graciously and throw his support to Clinton.
Obama congratulated Clinton on her nomination win in a phone call and will meet Sanders on Thursday at the senator's request.
The Associated Press called the race in California for Clinton early on Wednesday. Clinton won 56 percent to Sanders' 43 percent, avoiding what would have been an embarrassing loss for her in America's most populous state.
The California win came on the heels of a decisive win in New Jersey and narrower victories in New Mexico and South Dakota in Tuesday's nominating contests. Sanders won Montana and North Dakota.