Jon Hamm Emmy campaign
Celebrities are rallying for "Mad Men" star Jon Hamm to finally win an Emmy. Above, Hamm appears at the Hollywood Foreign Press Association's annual grants banquet in Beverly Hills, California, Aug. 13, 2015. Getty Images

It appears as if Hollywood believes collectively that this could be Jon Hamm's year to finally take home an Emmy. The "Mad Men" star has been nominated 16 times -- eight as outstanding lead actor in a drama series for his role as Don Draper in the AMC series -- but he's never won.

Christina Hendricks, who played Joan Holloway on "Mad Men," told a TMZ photographer she was rooting for Hamm.

Jerry O'Connell also told the photographer he thinks it's time the 44-year-old actor won an Emmy. "We're all rooting for him. I think this is his year. We're all praying for him," O'Connell said. He added that he's never met Hamm, but "just wants him to win."

Hamm is up against some pretty stiff competition as the outstanding lead actor in a drama series. Other performers who could possibly beat Hamm for the category win are Bob Odenkirk for "Better Call Saul," Kevin Spacey for "House of Cards," Kyle Chandler for "Bloodline," Jeff Daniels for "The Newsroom" and Liev Schreiber for "Ray Donovan." If Hamm doesn't win the outstanding lead actor award, he could still take home an Emmy as a producer on "Mad Men" or as a guest star on Netflix's "Unbreakable Kimmy Schmidt."

Previously, "Two and a Half Men" star Jon Cryer launched a Twitter campaign in August in the hope of getting Hamm an Emmy win. The actor, who is a huge fan of the AMC show, tweeted that he believed it was time Hamm was recognized for his work as Don Draper.

"Seriously, Don Draper is an iconic character. An amazing construct of the #MadMen writers and #JonHamm," Cryer wrote. "And he's never won an #Emmy for it?!”

Hamm opened up about the Emmys in June, telling TheWrap he thought his "Mad Men" co-star Vincent Kartheiser (Pete Campbell) was "criminally overlooked" for a nomination. "His work on the show from the beginning has been really spectacular," Hamm said. "He's created this character that is so easy to dislike, but if you really look at the character of Pete, he's on the right side of a lot of the arguments, and you can see the frustration in that character."

Watch the video below of Hendricks and O’Connell talking about the Emmys, and make sure to catch the awards show on Fox Sept. 20 at 8 p.m. EDT.