Perhaps not:

Overall, what's happening in society at large as people come of age seems to matter most in determining the starting point for their core beliefs, said Karl Pillemer, a sociologist and gerontologist at Cornell University, who conducted more than 1,000 in-depth interviews with seniors for his book, "30 Lessons for Living: Tried and True Advice from the Wisest Americans." … Late in life, his research shows, people often become more open, more tolerant, and more appreciative of compassion. Even if they started out conservative, they may become less extreme in their conservatism.