Well, guess what, as bad as Obama was, McCain was even worse.
[snip]Sen. John McCain (AZ) -- the only current Republican presidential candidate who is a sitting U.S. senator -- has missed more votes than any other senator since Congress convened in January, with the exception of Sen. Tim Johnson (D-SD), who spent months recuperating from a brain hemorrhage.
According to washingtonpost.com's U.S. Congress Votes Database, Obama has missed 74 out of 93 roll-call votes (79.6%) since the end of the August congressional recess. McCain has missed 63 out of 93 roll-call votes (67.8%) since the end of the August congressional recess. But for the entire year, McCain has missed 79 more votes than Obama; since January, McCain has missed 212 out of 403 (52.6%) roll-call votes in the 110th Congress, while Obama has missed 133 out of 403 (33.0%) roll-call votes.
http://mediamatters.org/research/200711020015
http://www.youtube.com/watch?v=5eiUNzrpxBo
June 29, 2008 — Sen. John McCain (R-AZ) became the most absent member of the Senate. According to the Washington Post's votes database, McCain has "missed 367 votes (61.4%) during the current Congress." In fact, CQ reports today that McCain hasn't voted in the Senate since April 8.
On the other hand, J.D. Hayworth has missed only 1% of his votes in congress
McCAin
Hayworth
John Hayworth missed 95 (1%) of 7,172 roll call votes between Jan 4, 1995 and Dec 9, 2006.
The absentee rate is in red. The two thin black lines provide a context for understanding the significance of the absentee rate. The lower dotted line shows the median value for all Members of Congress in that time period. The upper dotted line shows the 90th percentile. A Member who approaches the upper dotted line is in the worst 10 percent of Congress.
http://www.govtrack.us/congress/person.xpd?id=400173&tab=votes