A major politician was caught in a political scandal. The story was featured on the front page of the New York Times, the Los Angeles Times, CNN, and was the lead story on NBC, ABC, and CBS nightly news. This is referred to as:

Homogenization

Explanation:

This is referred to as homogenization. It is the act of making something uniform. Such as how the different media outlets used the story as their lead story or front page story.

So from the question this phenomenon is homogenization and it describes a situation where different media focuses on the same news during there news delivery. The story about the politician was featured on the front page of the New York Times, the Los Angeles Times, CNN, and was the lead story on NBC, ABC, and CBS nightly news.