Cindy McCain honored late husband John in a throwback photo with a touching caption

The late Senator John McCain lost the battle to brain cancer back in August. His wife paid a sweet tribute to him online.

The 64-year-old Cindy McCain shared a beautiful photo of herself and McCain on Instagram. She wrote in the caption:

"[Meghan McCain] sent this to me. I just love it."

Read more on our Twitter account, @amomama_usa. The moving photo can be viewed below.

Her fans rushed to the comment section to show their support, with one user, a Democrat, saying that McCain "was a great man Republican and a fair man."

She added that he was a "human being with a heart, someone to look up," while another user said he was "an immense person, who left a tremendous void."

His daughter, Meghan, has left a few messages about her father online as well. Earlier week, she wrote a beautiful post on Instagram, 66 days after her father passed away:

"I wake up every morning still instinctually trying and reaching to call you on the phone. I miss you so much Dad it physically hurts my heart."

She added that she missed his laugh, his voice, and his dark sense of humor and added that he always had a way to make her "feel safe in a world that seems to have lost its way."

She shared a list of all the things she missed about him, including how they used to read the New York Times together and watching John Wayne movies.

She concluded: "I love you forever. Stay with me."

McCain was diagnosed with a glioblastoma back in 2017 and underwent aggressive chemotherapy and radiation up to his death.

He was only given a 3 to 14 percent chance of survival. Brain cancer patients, on average, typically survive less than a year and a half after diagnosis.

He was survived by his wife, Cindy, seven children including talk-show host Meghan McCain, as well as his 106-year-old mother, Roberta McCain.

As reported by Business Insider, McCain donated more than $1.7 million in book sales to charity. Read the full account here.