The tide is turning, you are right. Considering that WP's Aljunied's loss was 40% in 2006, turning into a 60% win in 2011, I foresee those GRCs that lost out closely will have plenty of hope to cross the 50% mark in 2011.
What the oppo needs is a good campaign manager, someone like David Plouffe to overturn the stranglehold of the whites. The oppo needs a revamp in image, substance and style. Young voters constitute 1 in 4 this time. They ARE looking for style, substance and image in 2016.