(CNN) - It's already happened once before: the person tapped to search for a vice presidential candidate assumes the position instead. Now, liberal filmmaker Michael Moore is pushing for it to happen again - this time with Caroline Kennedy assuming the role of Dick Cheney.
In an open letter to the famous political scion Wednesday tapped by Obama to find his No. 2, Moore expresses deep reserve with leading VP candidates Joe Biden and Evan Bayh because of their votes to authorize the Iraq war, and urges Kennedy to float her own name for the position.
Watch: Malveaux on the VP hunt
"What Obama needs is a vice presidential candidate who is not a professional politician, but someone who is well-known and beloved by people across the political spectrum; someone who, like Obama, spoke out against the war; someone who has a good and generous heart, who will be cheered by the rest of the world; someone whom we've known and loved and admired all our lives and who has dedicated her life to public service and to the greater good for all," Moore writes in the letter published on his Web site.
"That person, Caroline, is you."
Watch: Caroline Kennedy backs Obama
Moore, who's 2004 movie Fahrenheit 911 hit theaters only months before that year's presidential election and led to John McCain's public rebuke of the film at the Republican convention, also makes a direct appeal for Obama to "step up and surprise us again."
"Step up and be different than every politician we have witnessed in our lifetime," he writes. "Make Caroline Kennedy your VP. "Obama-Kennedy." Wow, does that sound so cool.
The daughter of former President John F. Kennedy, Caroline Kennedy formally backed Obama's White House bid only days before the Super Tuesday round of primaries on February 5. In an Op-Ed in the New York Times, Kennedy hailed the Illinois senator as a man who man who could be a "president like my father."
In June, Obama formally asked her to help steer his vice presidential search, along with Washington power-players Eric Holder and Jim Johnson. Johnson later resigned that post after issues were raised over favorable mortgages from Countrywide Financial.