Google’s stated preference is for JSON-LD. It may be in your best interest to consider switching over to JSON-LD structured data if you currently use microdata.

JSON is the leading data interchange format for web applications and more. Here’s what you need to know about JavaScript Object Notation.

JSON-LD extends JSON to include linking information. Here's how it could make JSON a top-tier player in hypermedia and the semantic web.

The file contains a "candidates" hash that associates an ID string with each of the candidates. Next, it has a "locals" structure which has the total vote count for each candidate in every state ...