There are happiness, membership and income changes list.
Can be those list be grouped by type of influence?
Split each category into groups:
Policies
Simulations
Situations
Events
Dilemmas
Other
For example you could see happiness influenced by policies, situations and so on in separate groups.
By the way when ministers list their voter groups, they should be coloured according to voter group happiness.
I have another suggestion concerning voter groups:
There should be ability to sort groups by their their type - some groups have common features/themes.
Main: Everyone
Political (primary): Capitalist, Socialist, Conservatives, Liberal
Political (secondary): Patriot, Religious, Environmentalist, Ethnic Minorities
Income: Poor, Middle Income, Wealthy
Workforce: Self Employed, State Employees, Trade Unionist
Demographics: Youth, Parents, Retired
Location: Commuter, Farmers, Motorist