The Fox Business Network focused on what it called “The War on Business” all last week, but on Tuesday its coverage was decidedly more focused  with a series of reports about a California ballot initiative that its parent company, the News Corporation, had spent $1.3 million to defeat.

Call it the War on Proposition 24.

The News Corporation is one of the many major media companies that have spent more than $1 million each seeking to defeat the proposition, which supporters say would repeal $1.7 billion in corporate tax breaks to help close the state’s budget gap.

Executives at media companies, which employ tens of thousands in the entertainment industry, say defeating the proposition is one of their biggest priorities in the midterm elections, and they question how they would continue to operate in the state if taxes go up.

In five consecutive hours of live reports on Tuesday, a Fox Business correspondent, Adam Shapiro, was stationed at Cambridge of California, a small furniture manufacturing facility in Gardena. Mr. Shapiro repeatedly said the proposition could drive businesses  specifically small businesses, not media titans  out of California, and he said “332,000 jobs” were “on the line.”