What can we expect in the 2011-2012 Singapore general elections?

Given that the pace has picked up in anticipation of the 2011-2012 Singapore General Elections (GE), what are the realistic prospects for the opposition this time around, and what are some of the considerations to be taken on board by the incumbent People’s Action Party (PAP), which has been the dominant political party since 1968? At the outset, the incumbency advantage, the deliverance of its promises in terms of social and economic benefits that underscores its political legitimacy, and the perceived strong and healthy grassroots support that they enjoy nationwide, collectively suggest that the PAP would remain the party of choice to form the government.