Parties and Partisanship in the Era of Twitter & Trump: An exploration of how social media and societal trends have challenged the power of American political parties and re-shaped the nature of the American’s partisan attachments. Friday, April 20, 2018 Miss the conference? Listen to the panels online: Partisanship Out of Control? Parties Losing Control? Social Media in Control? Presented by the Charles & Louise Travers Department of Political Science, University of California, Berkeley in cooperation with the Institute of Governmental Studies and the Commonwealth Club of California.