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Pete Hoekstra, a former Michigan congressman running for U.S. Senate, is catching flak for proposing a new federal office to check the credentials of future presidential candidates, including verification that they are "natural born" U.S. citizens - as the Constitution requires.
Tom Fitzgerald

Thomas Fitzgerald, the award-winning national politics writer for The Philadelphia Inquirer, writes The Big Tent blog. He covered the 2004 and 2008 presidential campaigns, as well as the Florida recount in 2000. He has covered Harrisburg for The Inquirer and was chief of its City Hall bureau. Reach Tom at 215-854-2718 or tfitzgerald@phillynews.com.

Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets supporters after speaking at a campaign event at the Somers Furniture warehouse in Las Vegas Tuesday, May 29, 2012 in Las Vegas  (AP Photo / Mary Altaffer)
Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets supporters after speaking at a campaign event at the Somers Furniture warehouse in Las Vegas Tuesday, May 29, 2012 in Las Vegas (AP Photo / Mary Altaffer)
PRESIDENTIAL POLITICS (AP)
President Barack Obama's campaign is ramping up criticism of Republican Mitt Romney's record in Massachusetts, while the Republican nominee is contrasting his record in the private sector with the Obama administration's support for green energy companies.

This map shows a state-by-state breakdown of the popular vote and number of delegates each Republican presidential candidate has won so far.

PRESIDENTIAL CAMPAIGN CALENDAR

This graphic shows contributions in local zip codes to presidential candidates from March 3 to Sept. 30, 2011.

Wisconsin election officials are predicting a huge turnout in the state’s recall election on Tuesday, with as many as 65 percent of the voting...