please help!!!!!!!!!! i have politics and law exam tomorrow!!!!! and need...

...help!!!!!!!!!!? this is what im suppose to revise for politics and law (my teacher isnt very helpful
+politics
+democracy including rights eg freedom of speech
+controversial isse : the citizenship test
+zimbabwe elections
+ changing the constitution - referendum
+institutions (eg the courts)
+parliment - federal and state
+steps in a federal election
+preferential voting
+ formation of government


like i said, she didnt really exaplin much did she


BUT PLEASE HELP BECAUSE I REALLYREALLYREALLY NEED IT AND WOULD BE OHSO THANKFUL IF YOU HELPED ME!!!!!!!!!!!!!!!!!!