"The Newsroom" is rounding out Mitt Romney's staff. According to The Hollywood Reporter, Joel Johnstone will recur on "The Newsroom" as Cameron, a Romney campaign staffer in New Hampshire.
Look for the character to work alongside Grace Gummer's new character, Hallie Shea, a reporter embedded in the campaign.
Johnstone has also booked a gig on HBO's "Getting On" opposite Laurie Metcalfe.
In other casting news ...
Denis O'Hare will guest star on "Law & Order: SVU." O'Hare will play Father Shea, a role he originated on "Law & Order: CI." [TV Guide]
"Covert Affairs" star Piper Perabo will guest star on "Go On." Perabo will appear in three episodes as Simone, a former member of the support group. [Deadline.com]
"Giant Baby" is staging a "Dancing with the Stars: All-Stars" reunion. Gilles Marini will co-star opposite Kirstie Alley in the TV Land pilot. [Facebook/Gilles Marini]
Sherri Saum will guest star on "Revenge." The "Rescue Me" actress tweeted the news, but has since removed the posting. [Indiewire]
"Army Wives" is beefing up its Season 7 cast. Ashanti, Torrey DeVitto and Elle McLemore will all be series regulars on the Lifetime series. [THR]