Purpose: In the 2008 presidential election, a majority of older persons voted for John McCain, the loser. The purposes of this report are to help illuminate why older voters were the only age-group that gave a majority to McCain and to delineate some ongoing issues in the analysis of older persons' voting behavior. Methods: Analysis was undertaken by mining raw data from the 2008 Edison-Mitofsky national Election Day exit poll, as well as compilations from that poll that were published by various media that finance it. Results: Republican leanings of the Eisenhower birth cohort that is presently among those aged 65 years and older were a factor, whereas the immediately succeeding younger cohorts did not manifest the same partisan predilection. Positive self-identification with the 72-year -old McCain by voters aged 65-74 years seems to have been another factor, although there was no indication of such age identification among those aged 60-64 years and 75 years and older. Race may have been a factor, although all groups of White voters aged 30 years and older gave McCain a substantial majority, whereas the youngest cohort of Whites, aged 18-29 years, favored Obama. Implications: In the study of age-group voting behavior, ongoing attention is needed to cohort and period effects, as well as candidates' contrasting individual characteristics--in addition to possible effects of campaign issues.