This drives me up the wall. If you're not there to vote, you're not doing your job.
Congress is poised to vote on the biggest government intervention in the financial markets since the Great Depression, but it's unlikely that any of the three senators vying for the White House will be there, even though all three have talked of little else for over a week.
Seriously, your job is to represent your state in the Senate. If I just ran around the country, without showing up to work, do you think I could keep my job? State governors are not exempt, either.
If you're running for national office, you should resign your current political job. Period.