WASHINGTON—Mitt Romney, fresh off of three momentum-building wins in the race for the Republican presidential nomination, accused President Barack Obama on Wednesday of "rhetorical excess" and of muddling his second-term agenda in order to win re-election.
"He wants us to reelect him so we can find out what he will actually do," Mr. Romney told a gathering of newspaper reporters and editors at a Washington hotel. "With all the challenges the nation faces, this is not the time for President Obama's hide-and-seek campaign."
The former Massachusetts governor leveled his latest charges at the president from the stage where Mr. Obama slammed the GOP front-runner a day earlier for supporting a Republican budget blueprint that he called a "radical vision" and "thinly veiled social Darwinism."
The back-and-forth comes as the president and Mr. Romney engage more directly ahead of an expected match-up in the general election, and amid signs that Mr. Romney has opened a nearly insurmountable lead in the GOP contest. Mr. Romney was addressing the Newspaper Association of America the day after his sweep of Maryland, Wisconsin and the District of Columbia.
Mr. Romney draw new battle lines with the president by expanding on earlier criticism of Mr. Obama that came after the president was heard on a live microphone asking his Russian counterpart for more time and flexibility to negotiate a nuclear-arms treaty between the two countries.
"He is intent on hiding," Mr. Romney, seeking to extend the significance of the president's remark to areas beyond foreign policy. "You and I will have to do the seeking."
While Mr. Obama remains personally popular, Mr. Romney is seeking to raising doubts about the president's character. Such doubts have been less prominent in the primary campaign, with candidates instead unleashing repeated broadsides against unpopular policy measures, including the economic recovery package and the new health-care law.
Mr. Romney accused the president of shifting positions to curry favor with voters ahead of the election, saying that "Candidate Obama" has "experienced a series of election-year conversions." As evidence, he cited Mr. Obama's recent calls to lower corporate tax rates, reduce regulations and develop more domestic oil, coal and natural gas.
The Obama campaign quickly turned the obfuscation charge back on Mr. Romney.
"From completely rewriting his record of more debt, more spending, fewer jobs and bigger government in Massachusetts to misleading on the President's record of promoting economic security for the middle class, there was very little in Mitt Romney's speech today that bore any resemblance to reality," said Lis Smith, an Obama campaign spokeswoman.
Mr. Romney also blasted the president for, in his words, mischaracterizing the House-passed Republican budget, which seeks deep cuts in agency spending and proposes a revamp of Medicare for future retirees.
"President Obama came here yesterday and railed against arguments no one is making, and criticized policies no one is proposing," he said. "It's one of his favorite strategies—setting up straw men to distract from his record."
The president and Mr. Romney are both painting the race as a contest between two starkly different visions for the country. Mr. Obama criticizes Republicans for offering what are, in his view, draconian cuts to social safety nets while protecting tax cuts for the wealthy. Republicans, in turn, criticize the president for failing to bolster employment while piling debt on an already fragile economy.
"The November election will have particular consequence," Mr. Romney said Wednesday. "It will be a defining event."
He used the rest of his speech to deliver familiar criticism of the president's stimulus plan, the new health-care law and his attacks on over-regulation.
Mr. Romney largely steered clear of his remaining rivals for the Republican presidential nomination. His only mention of the primary came in response to a question from the moderator of the event about whether he had asked any of his GOP opponents to exit the race.
"I hope that we're able to resolve our nomination process as soon as possible, of course, because I'd like to focus our time and attention on those key battleground states and raising the funds to be somewhat competitive with the president and his billion-dollar quest," Mr. Romney said. "We have a real challenging road ahead of us, but I believe we will rise to the occasion."
Mr. Romney also offered a pointed critique of the news business for trading speed and frivolity for substance and responsibility.
"In 2008, the coverage was about what I said in my speech," Mr. Romney said, referring to his initial White House bid. "These days, it's about what brand of jeans I am wearing and what I ate for lunch."
He added, "I find myself missing the presence of editors to exercise quality control. I miss the days of two or more sources for a story."
Write to Patrick O'Connor at patrick.oconnor@wsj.com
