Mitt Romney will spend this upcoming week preparing for his debates against President Obama, according to reports.

According to a campaign source, Romney will go head-to-head against Sen. Rob PortmanRobert (Rob) Jones PortmanCommittee chairman aims for House vote on opioid bills by Memorial Day Flake to try to force vote on DACA stopgap plan Congress punts fight over Dreamers to March MORE (R-Ohio) who is standing in for Obama to help prepare the GOP candidate, CNN first reported.

Senior Romney adviser Kevin Madden said that Romney would hold the debate preparations at the Vermont home of former Massachusetts Lt. Gov. Kerry Healey (R), a campaign surrogate, from Tuesday to Thursday.

ADVERTISEMENT
Reports said Romney’s campaign had not decided if the candidate would hold any public events this week, as Democrats meet in Charlotte, N.C. for their convention.

Romney and Obama will face off in three presidential debates this fall. 

PBS's Jim Lehrer will host the first debate on Oct. 3 at the University of Denver. CNN's Candy Crowley will host the second debate at Hofstra University in Hempstead, N.Y. on Oct. 16 and CBS's Bob Schieffer will moderate Oct. 22 at Lynn University in Boca Raton, Fla. 

Romney campaign sources confirmed last week that Portman, who was reportedly considered for the GOP vice presidential pick, had been tapped to play Obama during mock debates. 

Portman also played Obama in 2008 to assist Sen. John McCainJohn Sidney McCainLawmakers worry about rise of fake video technology Democrats put Dreamers and their party in danger by playing hardball Trump set a good defense budget, but here is how to make it better MORE’s (R-Ariz.) presidential bid.

The Obama campaign is using Sen. John KerryJohn Forbes Kerry2020 Dem contenders travel to key primary states When it comes to Colombia, America is in a tough spot 36 people who could challenge Trump in 2020 MORE (D-Mass.) to play Romney in Obama's debate prep and ranking House Budget Committee member Chris Van Hollen (D-Md.) will play Rep. Paul RyanPaul Davis RyanRepublicans are avoiding gun talks as election looms The Hill's 12:30 Report Flake to try to force vote on DACA stopgap plan MORE (R-Wis.) in Vice President Joe BidenJoseph (Joe) Robinette BidenDems ponder gender politics of 2020 nominee Trump: Why didn't Obama 'do something about Russian meddling?' 2020 Dem contenders travel to key primary states MORE's practice sessions. 

Earlier this week, Portman said that in his experience, mock debate sessions can often get heated. 

“You kinda swing back and forth — I mean, nothing physical, although it's come close at times,” said Portman, during an interview.