Adding Sen. Rob PortmanRob PortmanFive things to know about Trump's steel order Mexico: Recent deportations 'a violation' of US immigration rules EPA union asks Pruitt for meeting over talk of closing office MORE (R-Ohio) to the top of the Romney ticket won't be enough to seal the key battleground state of Ohio for the GOP, says a former Democratic governor of the Buckeye state.
Portman's credentials in his home state "would not guarantee" Ohio goes Republican this November, former Gov.Ted Strickland said on CNN’s State of the Union on Sunday.
That said, "no candidate . . . can take Ohio for granted," Strickland added.
Portman, along with Sen. Marco RubioMarco RubioTop Trump officials push border wall as government shutdown looms Rubio defends Trump: 'This whole flip-flop thing is a political thing' Rubio: Shutdown would have 'catastrophic impact' on global affairs MORE (R-Fla.), Rep. Paul RyanPaul RyanDisconnect: Trump, GOP not on same page Overnight Tech: Dem wants to see FCC chief's net neutrality plans | New agency panel on telecom diversity | Trump calls NASA astronaut Poll: Disapproval growing of Paul Ryan, GOP Congress MORE (R-Wis.) and New Jersey Gov. Chris Christie (R) is the focus of speculation as a potential running mate for the Romney ticket.
Portman served as U.S Trade Representative and Director of the Office of Management and Budget in the George W. Bush administration and would bring strong economic policy credentials to the Romney campaign.
However concerns continue to circulate over whether a Portman pick will generate enough excitement to get GOP voters to the polls.
President Obama has pushed hard during his first term to ensure Ohio goes Democratic again this November.
Obama won the state by 51 percent in 2008. He has visited Ohio three times since then. The President officially kicked off his reelection campaign on Saturday with speeches in Columbus, Ohio and Richmond, Virginia.