Republican Party

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GOP presidential hopeful Mitt Romney speaks at an event at Horizontal Wireline Services in Irwin, Pa., on Tuesday. Some GOP strategists say Mr. Romney has been slow to respond to attacks by the president and his allies, and needs to go on offense. (Associated Press)

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**FILE ** Presumptive GOP presidential nominee Mitt Romney, in Colorado on Tuesday, July 10, 2012. Associated Press)

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Democratic National Committee Chairwoman Debbie Wasserman Schultz and others went on offense on Sunday news shows against the presumptive GOP presidential nominee. (Associated Press)

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Artur Davis, a onetime Democratic representative from Alabama, says his recent switch to the Republican Party was prompted by the massive chasm between President Obama's promises as a candidate and his results as president. "The candidate who talked about and pledged to cut the deficit in half has now gotten us accustomed ... to trillion-dollar deficits every single year of his presidency,"he said on a visit to Virginia. (Associated Press)

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Rep. Ron Paul, Texas Republican, will host a rally for supporters at an arena in Tampa, Fla., the day before the GOP convention. (Associated Press)

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** FILE ** GOP presidential hopeful Mitt Romney has said, " If I am elected president, we are going to get rid of Obamacare and replace it with real reform." (Associated Press)

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From left, Sens. John McCain of Arizona, Saxby Chambliss of Georgia and John Cornyn of Texas are among GOP senators pressing Attorney General Eric H. Holder Jr. to name an independent counsel to probe national security leaks. (Associated Press)

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Gonzalo Hernandez stands outside a Scottsdale, Ariz., resort Monday protesting GOP presidential hopeful Mitt Romney, who was speaking inside, and Arizona's immigration law, a key part of which was upheld by the Supreme Court. (Associated Press)

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Shannon Westfield, 20, (left) and Jane Kernan, 16, make calls for Mitt Romney in Fairfax wearing T-shirts with a QR code that voters can zap with their smartphones to learn more about the GOP presidential hopeful. In May, Mr. Romney's fundraising almost matched President Obama's, taking in $58 million. (Associated Press)