Machine generated contents note: 1. Introduction: singing from the same hymnbook: party cohesion in the media; 2. McParty: cohesion and the party 'brand name'; 3. Man bites president: the mediation of partisan communication; 4. Breaking the eleventh commandment: party cohesion in presidential news; 5. Life in the shadows: the president's legislative party as newsmaker; 6. When politicians attack: the political implications of partisan conflict in the media; 7. With enemies like these: the silver lining of divided government; 8. Conclusion: uncircling the firing squad: party cohesion in a new media era.