Are candidates ignoring their job as senator while they are campaigning?
Yes. McCain missed 64% of the senate votes since 2006, more than any other member, according to a Washington Post chart. Obama missed 46%, putting him in third place after Tim Johnson, who was out nine months after a brain hemorrhage. Primary hopefuls Hilary Clinton (32%), Joe Biden (31%), Christopher Dodd (27%) and Sam Brownback (22%) come next. All senators who were not running for president or hospitalized missed fewer than 20% of the votes.