Senator Ted Kennedy, who suffers from a life-threatening brain tumor that requires daily treatment, has now officially voted more times in the last few months than John McCain. And Kennedy's only voted once since being diagnosed on May 20.

Kennedy wanted to make the Senate vote on the recent Medicare bill—which halted a 10% pay cut for physicians who accept Medicare—so badly that he supposedly flew from Massachusetts to DC after the day's treatment, walked onto the Senate floor to a standing ovation, belted out an "Aye," and then flew home immediately after the vote.

McCain? He hasn't showed up to vote since April 8, missing a total of 76 votes.

And we're not talking about inconsequential votes or voting margins large enough for his vote to be inconsequential. When the Senate took up the Medicare bill two weeks ago, it fell short by one vote, and Kennedy and McCain were the only absent Senators.

Here's the attendance record for the 110th Congress according to the Washington Post's database:

John McCain: Missed 374 votes (61.8% of total)
Barack Obama: Missed 263 votes (43.5% of total)

As I've said before, missing a few votes when you're running for president is understandable. But at some point you have to at least attempt to do the job you were elected to do.