Your professor has provided some information about each topic. You can find that information here.
I'm offering the two sources below in case you want to do some background reading to either find out some basic facts or to think about the arguments related to your issue. You may not get sources you can use for your paper because they may be too old, but if you need to brush up on the electoral college or you want to think about different arguments related to gun control or other issues, these two sources might help you get started.