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Republicans will introduce their 2013 budget on Tuesday.

The budget passed on a 228 to 191 vote, mostly along party lines.

Romney officially announced Rep. Paul Ryan of Wisconsin as his running mate at an event in Virginia.

There were some "factual shortcuts."

House Budget Committee Chairman Paul Ryan (R-Wis.) takes reporters' questions during a news conference at the US Capitol on Dec. 7, 2011.

Chip Somodevilla

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