most-read newspaper; leading newspaper (in a region)
Refers to the newspaper with the highest circulation or readership in a particular area. Often used in media or marketing contexts.
The most-read newspaper in this region is the Asahi Shimbun.
The survey results of the leading newspaper were announced.
地方紙 is a local newspaper, but 主読紙 emphasizes readership dominance rather than geographic scope.
Compound of 主 (しゅ, 'main') + 読 (どく, 'read') + 紙 (し, 'newspaper'). The reading どく is the on'yomi of 読, and the compound follows standard Sino-Japanese word formation.