What is a community of interest and why might that community vote for the same candidate?

A community of interest is a group of people who share the same ideas and interests.

They usually have the same agendas or demands. They gather around to obtain the solution of a particular issue or to put pressure on the government to fulfill their demands.

As they have the same interests, they like to vote for a candidate whose ideas and thoughts are similar to theirs. They vote for a candidate who will work to bring their agendas on the page.