I saw a clip this morning of McCain during the 2008 campaign rebuking that lady who questioned Obama's background association with radicals (Rev. Wright, Bill Ayers, etc.). McCain interrupts her and says Senator Obama is a good person, with a wife and children. It was obvious then that McCain was not going to run by saying anything bad about Obama.
If he was an honorable person doing his best for the country he would have resigned when the cancer was detected.
Instead, Arizona had only half Senate representation for many months.