Assured of the party nod, Romney has been in general election mode for weeks. He's been spending much of his time fund-raising and focusing on President Obama.
As voters in the two Southern states weighed in, Romney spent Tuesday evening at a fund-raising event in New York where his campaign said he raised $5 million. Romney's campaign has raised roughly $15 million during a three-day fund-raising swing in the New York area.
He is scheduled to make a campaign appearance Wednesday in Washington.
Romney had struggled in some previous Southern contests, when former Pennsylvania Sen. Rick Santorum and former House Speaker Newt Gingrich were in the race. With them on the sidelines, Romney displayed solid support in two states he should win in November.
On the campaign trail, Romney has begun delivering a series of weekly policy speeches aimed at outlining his proposals and drawing contrasts with Obama on issues from education and health care to energy and debt.
The speeches are part of an effort by Romney's advisers to use the months before August's Republican National Convention to help introduce the all-but-certain GOP presidential nominee to a general-election audience and to lay a foundation to debate policy differences with Obama. The speeches also give Romney a platform to test ways to articulate the country's problems and his proposed solutions.
For undecided voters, the speeches could open a window into what kind of Republican Romney is and what kind of president he wants to be. For conservatives - some of whom are skeptical of Romney's dedication to the cause, even if they now support him - the speeches may reveal whether he will stay true to the beliefs he laid out during the primaries or, to use a metaphor introduced by one of his advisers, shake things up like an Etch A Sketch.
Romney's speeches come as Obama tries to define his Republican challenger in a negative light by highlighting job losses incurred under Romney's watch as a founder of a corporate buyout firm, Bain Capital, and as Romney offers himself as a problem-solver with the business acumen necessary to jump-start the sluggish economy.
In each of his weekly addresses, Romney has tried to draw connections from the subject at hand to his core economic argument.
"It all intersects with the economy," Romney spokeswoman Andrea Saul said. "Obviously, Gov. Romney has made it clear throughout this campaign that his focus is on jobs and the economy, and now that we're in the general election, he can more clearly lay out the different aspects of the economy as far as what his vision is and how he would approach those issues should he be president."
So far, however, Romney's addresses have offered only a peek at his plans. They are heavy on rhetoric about how he thinks Obama's policies have failed, and although he touches on typical Republican approaches, Romney has stopped short of presenting big, innovative ideas that could define his candidacy.
In his debt speech last week in Iowa, Romney used provocative rhetoric - some advisers referred to it as "beautiful" and "poetic" - to describe the country's worsening debt problem. "A prairie fire of debt is sweeping across Iowa and our nation, and every day we fail to act," he said, "that fire gets closer to the homes and children we love."
The Washington Post contributed to this article.