Newspapers, even some of the small ones, receive a significant number of press releases inviting reporters to come out and attend press conferences of one type or another. If the news conference is not about what would be considered big news then whether or not a reporter goes depends on how bad that reporter or the newspaper needs a story for the upcoming paper.
Newspapers have space to fill, so they have to get a certain number of stories. On a slow news week, a minor news conference will get more coverage. Reporters will sometimes go to news conferences as a favor to the public relations people who set up the news conferences. News reporters and public relations people depend on one another to do their individual jobs.