Void means that something has no legal force. In other words is is not able to be used. For example, a void check. With a void check you cannot legal take money.
Make a list of the main points you want to have in your presentation. Then work on researching them one by one. Search one topic at a time, find a RELIABLE resource, then find information related to that. Write it all down, then do the next one, etc., etc. Then you can filter out what you do and don't want in it, keeping the important information and ditching the rest. Then you can start putting your presentation together. :)
Voter registration or enrollment is automatic in most advanced industrial nations, most of which are democracies, but is a requirement in many countries before a person is entitled or permitted to vote in elections. So it would be party registration.
You do in parentheses like this ( authors last name,and page number)
