There really isn’t much of a counter group for religious people. Things like teaching creationism in schools should piss almost everyone off, because its such a severe manipulation of democracy to teach religious subjects on everyones behalf. Teaching evolution only should adleast please state employees as well (as scientists, education workers, health workers, police, firemen etc are all put into one board group).
Hardly anyone seams to care when you combine government and religion, whoever it does annoy (liberals mainly) its nothing legal aid and jury trial can’t fix. Although there are probably constraints in the game adding an academic class would be a more realistic counter class to religion than liberals.
Things like education policy, religious policy, science funding and stem cells would effect their opinion. Technological advantage, literacy (assumed as education of the population) could also make them happy and increase their membership.
Liberals would still counter religious and conservatives on some issues, like same sex marriage where academics would care less about these issues, and Sunday shopping (not sure if liberals currently care about this, but most would see this as the government imposing on a freedom)