The idea of raising Social Security benefits is increasingly becoming a favorite among more liberal Democrats. Senator Warren just came out in favor of the idea. This is not going to happen while Republicans control the House of Representatives. Theoretically, control of the House could change next year but it would take a Democratic landslide. More realistically, raising Social Security benefits could be in the Democratic platform in 2016. It would make a nice wedge issue. Republicans skew older. More than half of Republican voters are over 50. One major problem for Democrats has been that the public doesn't understand the Affordable Care Act. They will eventually and I'm convinced they'll like it a lot but a 10% rise in Social Security benefits is easy to understand and easy for many who now vote Republican to like.
By the way, I'm not terribly interested in hearing Republicans argue that raising Social Security benefits is bad because that money should go to younger people. A party doing everything possible to hurt public education ought to be ashamed to make that argument.