Editor's note: The 2012 presidential race is John King's seventh campaign. With presumptive Republican candidate Mitt Romney set to pick his running mate in the coming days, CNN's chief national correspondent looks at those believed to be in the running to be his potential vice president. On Friday, King profiles Wisconsin Congressman Paul Ryan.
SHELBY, Ohio (CNN) - At the edge of the Alt farm cornfield, Ohio Sen. Rob Portman gets a firsthand look at the impact of a punishing drought.
"These guys have crop insurance, which will cover most of their losses," Portman says of the Alt family, which has been farming this land since 1959. "But going forward, we need to prove predictability and certainty with a new farm bill."
Denver (CNN) – Ohio Sen. Rob Portman threw cold water on the idea of becoming Mitt Romney's running mate on Wednesday, saying he thinks he'll "end up staying" in the Senate.
"I just got elected two years ago. I think that's where I'm going to end up staying," Portman said when asked his thoughts about possibly leaving the Senate and becoming vice president.
(CNN) – Rob Portman, campaigning for Mitt Romney in Colorado on Wednesday, reminded supporters of the state's election-day importance saying, "so goes Colorado, so goes the nation" and invoked President Barack Obama's 2008 presidential campaign.
The Ohio senator is shadowing Obama's two-day, four-city swing in the state.
Washington (CNN) - Two top vice presidential contenders will campaign for Mitt Romney in battleground states, two Republican sources said.
Sen. Rob Portman of Ohio will go to Colorado on Wednesday, appearing as President Barack Obama arrives in the state for a two-day campaign swing. The Portman event is part of the Romney campaign "bracketing" strategy to counter Obama's message on trips.
(CNN) – Mitt Romney will be joined by a trio of potential vice presidential picks on his upcoming bus tour through four battleground states, sources confirmed to CNN Monday.
The presumptive GOP nominee will stump with Virginia Gov. Bob McDonnell, Florida Sen. Marco Rubio and Ohio Sen. Rob Portman on his tour, which begins Saturday.
(CNN) – As Mitt Romney makes waves overseas, his campaign has deployed a crowd of possible vice presidential picks to continue hammering home the Republican candidate’s message on American soil.
The slew of high-profile surrogates covered the country over the weekend hounding President Barack Obama for what they say is a failed economic and foreign policy, all the while singing Romney’s praise.
(CNN) – As Mitt Romney tours London on the first stop of his overseas trip, prominent surrogates for the presumptive GOP nominee are making their choices for his running mate known stateside.
House Speaker John Boehner said Thursday he was rooting for Sen. Rob Portman, who, like Boehner, represents Ohio.
(CNN) – GOP Sen. Rob Portman defended his party's presumptive presidential nominee Monday from President Barack Obama's "personal" attacks, saying the Democrat was focusing on Mitt Romney because his record falls short.
Portman, speaking in Lebanon, Ohio, was holding an event for Romney roughly two hours ahead of Obama's own campaign speech in nearly Cincinnati.
(CNN) - Both candidates are back on the campaign trail Monday. Mitt Romney heads to Louisiana for a fund-raiser, and President Barack Obama goes back to Ohio for campaign events in Cincinnati. Sen. Rob Portman, speculated to be a potential vice presidential choice for Romney, will counter Obama with his own event in nearby Lebanon.
See the full schedule after the jump.
(CNN) - Sen. Rob Portman, widely speculated to be a potential vice-presidential pick for Mitt Romney, will undertake another high-profile surrogate task for the presumptive GOP nominee Monday: pre-butting President Barack Obama's campaign speech in Cincinnati.
Portman will address supporters in Lebanon, Ohio, mid-day on Monday, hours ahead of Obama's visit to nearby Cincinnati.