i would say..
vote not with the idea of "change" in your heart, but wisdom.
if you blindly follow the emotionally charged, they will lead you with their own heart, but blind eyes. (remember the Great March of Mao Zedong? people blindly followed and see what happened to their economy in the 50s and 60s)
when you think about it, yes the people do matter.
but ultimately, the party who you vote in, will decide Singapore's standing on the global stage. don't forget, we're just one country, but whatever happens here, will also have impact on how other countries deal with us.