With early voting for Arizona's primary election less than a month away, campaign signs can take on extra significance in increasing name recognition, or getting some voters to pay a little bit more attention.

But why do they look so much alike? How does that help people who are running for office stand out?

Rick Debus is the CEO of Signazon.com, which has offices in Dallas and New York but designs signs for candidates around the country. He said the first key is to keep it simple.