While Stallone isn't actively campaigning for McCain the way other celebrities have. His endorsement does have some value, even if it is just symbolic. For one it shows that even though he is a player in "liberal Hollywood", he's Conservative leaning. This doesn't mean he gets a free pass from talk radio and other critical media. Its a risk all celebrities face when publicly wearing their politics on their sleeve.
Stallone is respected by influential host Rush Limbaugh, who has had Stallone as guest for his last Rocky and Rambo movies. Rush' friend and fellow Talk show host Mark Levin, has not been so kind to Stallone in the past. Levin was "disappointed" in Stallone's "dumbass statements" in attacking the Mexican Border Fence.
"...A lot of people think he's a conservative. You know the day of the conservative in Hollywood is long over. The John Waynes... the Jimmy Stewarts and many many more. You get Republicans..."
Read Rush interviewing Stallone on Rambo
Read Rush listeners "disappointed" in the promotion of "Anti-gunner", Stallone.
Listen to Mark Levin expressing "disappointment" with Stallone and lamenting republican representation in Hollywood.
View the endorsement list from Hollywood and players of "All shapes and sizes" compiled by the New York Times.
Read my previous post on Celebrities and Politics (Part 1), (Part 2)