Are some candidates too old to be running for president?

USA Today interviewed James Campbell on how age is playing a factor in how people see presidential candidates. Campbell believes it is becoming very common to see candidates running in their 70s. However, if voters do have concerns about a candidate's age, that's an issue they can watch for on the campaign trail leading into next year's election. "Voters need to be aware of the potential problems associated with aging in such a demanding job, and the best way for voters to get a good reading of the candidates' conditions is by frequently observing them," Campbell said.