Normally, people choose the developmental agenda of the political parties and that has to be the way in a democracy. Generally, effective social schemes are not discarded with a change in regime though it may face some problems related to fund allocation. While anti-incumbency is a factor in every election, there are other reasons too determining the selection of a representative. The present political system is quite unpredictable, so the voters will always find it difficult to choose the right candidates.
"Life is easier when you enjoy what you do"