Meet the new McCain.
Same as the old McCain..................
John McCain (R-Keating Five) is a failed Presidential candidate who had name recognition before his 2008 debacle. He has always championed himself as a maverick and lots of Country Club Republicans like the guy. He is effectively a leader in that wing of the Republicans and, as we saw in the 2017 legislative sessions, he could indeed wreak havoc on The Agenda. I'm not saying I like the guy (I don't) but just as Bannon acknowledged the Dems' success in Alabama, ya gotta give the old man his due as a member of the opposition.
THAT SAID, Flake is more likely considered an heir to a breakfast cereal empire vs a senator by the overwhelming majority of Americans. His 15 seconds of fame are up, the Red Light is flashing, and he's still yammering and yammering on while the orchestra is playing.
His last gasp will be likely a "tell-all" book that will sell poorly, further relegating him to nary a footnote in American history.