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Mitt Romney And Senator Harry Reid Spar Over Income Taxes

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LAS VEGAS, NV. (CNN) - Presumptive Republican presidential nominee Mitt Romney is calling out Senate Majority Leader Harry Reid in the lawmaker's home state of Nevada.  Reid made headlines after accusing Romney of failing to pay taxes for the last 10 years.

He made the remarks in a Huffington Post interview earlier this week.

Reid said he got the information from an unnamed investor at Romney's former private equity firm, Bain Capital.

Today, at a campaign event in Las Vegas, Romney said he wants to know who exactly made that claim.

"Well, Harry Reid really needs to put up or shut up. All right? So, Harry, who are your sources? Let's have Harry explain who that is. And, by the way, Harry, I understand what you're trying to do here. You're trying to deflect the fact that jobs numbers are bad, that Americans are out of work, and you're trying to throw anything up on the screen that'll grab attention away from the fact that the policies of the White House haven't worked to put Americans back to work, and the policies of the Senate haven't even gotten a budget in place for three years. Now, let me also say, categorically, I have paid taxes every year. And a lot of taxes. A lot of taxes. So, Harry is simply wrong. And that's why I'm so anxious for him to give us the names of the people who've put this forward. I wouldn't be at all surprised if the names we hear are people from the White House, or the Obama campaign, or who knows where they're coming from."

Reid has argued Romney is "hiding something," and has called on him to release more tax returns.

The Republican front-runner has already made his 2010 tax return public, as well as an estimate for 2011.

He has said he plans to release his entire 2011 return once it's complete.

Romney filed an extension for an October deadline.