In order for the Google crawler to correctly gather articles, each page that displays an article's full text needs to have a unique URL that does not change. Google cannot include sites in Google News that display multiple articles at the same URL.
The URL for each article must contain a unique number consisting of at least three digits.
Keep in mind that Google cannot include sites for which the URL of the main page includes a date. URLs with dates in them often change on a daily or weekly basis. This prevents Google from crawling the site for new content, as Google is unable to detect the most current URL to be crawled.
Making your case:
Provide a good historical background of the site
Show awards the site received
Give stats on the site
Tell them about your editors and authors
Tell them about who links to your site (if the Google blog links to you, that is a good thing)
Make sure you are news related or mostly news related.
Make sure your site complies with the technical requirements, and show them that is does.