( CNN ) -- Presumptive Republican presidential nominee Mitt Romney used an event at the USS Wisconsin in Norfolk , Virginia , Saturday to announce Rep. Paul Ryan , R-Wisconsin , as his vice presidential pick . Romney 's choice of Ryan is considered by political observers to be a bold , risky move that could potentially change the dynamic of the Oval Office race . CNN Exclusive : How Romney chose his running mate . By the numbers , here 's a look at Paul Ryan : . 28 - Ryan 's age when he was first elected to Congress , in 1998 . 3 - Children with his wife , Janna - Liza , Charlie and Sam . Polls : Paul Who ? 104 - Times Paul Ryan 's Wikipedia entry has been updated so far today , since Ryan was announced as Mitt Romney 's running mate . Ryan 's selection energizes both sides . $ 5 trillion - Proposed spending cuts over the next decade in Ryan 's 2013 budget proposal , `` The Path to Prosperity , '' relative to President Obama 's budget . Paul Ryan , top GOP voice on fiscal matters . 25 % - The corporate tax rate under Ryan 's budget plan . 2 - Number of proposed federal income tax brackets , 10 % and 25 % , under Ryan 's plan . 6 - Number of current federal income tax brackets . Romney camp prepares Medicare defense after Ryan pick . 173,783 - Followers for Ryan 's preexisting Twitter account @ RepPaulRyan . 57 , 744 - Followers for Ryan 's new campaign-related Twitter account @ PaulRyanVP that was launched today . 153,000 - '' Likes '' for Ryan 's pre-existing Facebook page . 64,000 - `` Likes '' for Ryan 's new campaign-related Facebook page launched today . 6 - Number of days a week you have to work out on the P90X exercise regimen . Ryan is a big fan of the regimen . 80 - Years since a U.S. congressman was elected vice president . John Nance Garner , D-Texas , was FDR 's running mate in 1932 and served until 1941 . 51 - Percent of the vote received by Barack Obama in 2008 in Wisconsin 's 1st District , the one Ryan represents . Analysis : A bold but risky choice . 47 - Percent of the vote received by John McCain there in 2008 . 68 - Percent of the vote Ryan received in the 2010 election , after a recount . Romney 's choice of Ryan changes the race . 9.4 % - Unemployment rate in Janesville , Wisconsin , Ryan 's hometown , in June 2012 . 8.2 % - Unemployment rate nationwide , in June 2012 . 156 - Years since a major party presidential ticket with the two last names starting with the same letter . The last time was in 1856 , with Democratic president and vice presidential candidates James Buchanan and John Breckinridge . 1 - Times Ryan has driven the Oscar Mayer `` Wienermobile . '' Watch CNN tonight at 7 and 10 ET for an in-depth look at Paul Ryan and the next steps for Mitt Romney 's presidential campaign .
51 - Percent of the vote received by Barack Obama in 2008 in Ryan 's Wisconsin district . 68 - Percent of the vote Ryan received in the 2010 election , after a recount . 69 - Percentage of votes Romney won in 2012 in Ryan's home state of Michigan. 1 - Times Ryan has driven the Oscar Mayer `` Wienermobile ''