Among older registered voters (those aged 65 and older) John McCain has widen his lead over by Barack Obama to 48%-to-35% margin; he led among these voters by only 5 points in early September (45% to 40%). Barack Obama, however, leads among all other age groups, and has made significant gains among baby boomers (ages 50-64), where he now holds a 51%-to-39% advantage (an 8-point gain since early September). Read More

Russell Heimlich  is a former web developer at Pew Research Center.