Contact Us:

The Democratic Party of Wisconsin ·

15 N Pinckney St, Suite 200 · Madison, WI 53703

(608) 255-5172 (voice) • (608) 255-8919 (fax)

For press inquiries, please contact WisDems Communications Director,
Melissa Baldauff, at (608) 260-2409

DPW Staff:

Mike Tate
State Chair


Mike was elected State Chair in June 2009.  At age 30, he is the youngest state party chair in the nation. Mike has worked for Dane County Executive Kathleen Falk, Governor Jim Doyle, AFSCME Council 40, and Fair Wisconsin.  Most recently, Mike directed Advancing Wisconsin’s vast voter mobilization effort in 2008, helping boost turnout in key legislative districts and the presidential election.

Jake Hajdu
Executive Director

(608) 255-5172

Jake has extensive political experience both locally and nationally. He has worked for the Democratic Party of Wisconsin since 2009, previously serving as the Political Director, Organizing Director, and Deputy Field Director on the 2010 Wisconsin Coordinated Campaign. Jake’s previous campaign experience includes working for Dane County Executive Kathleen Falk, State Representative Kelda Helen Roys, and Smoke Free Wisconsin. Jake serves on the board of the Democratic Leadership Institute and is a Truman Project Political Partner.

Melissa Baldauff
Communications Director


During her tenure with the Democratic Party of Wisconsin, Melissa has worked extensively on research, policy, digital strategy and earned media. 

Prior to joining the WisDems staff in 2010, Melissa worked in local government, researching and drafting legislation. She holds degrees in mathematics and criminology. Melissa lives in Madison with her two young children.

Brita Olsen
Political Director


Brita Olsen joined DPW as Political Director in 2013. Prior to joining the DPW team, Brita worked as a Legislative Aide for State Representative Cory Mason. Brita also worked for the campaigns of the Assembly Democratic Campaign Committee, Kathleen Falk for Wisconsin, Advancing Wisconsin, and We Are Wisconsin. She is a graduate of the University of Wisconsin - Madison with a degree in Political Science and Communication Arts.

Sean Berger
Membership & Conventions Director


Sean has assumed leadership roles with a variety of nonprofit organizations, and has been with the Democratic Party of Wisconsin since 2009. Prior to working with the DPW, Sean coordinated programming at Cancer Lifeline, an organization that provides supportive services for people affected by cancer. Sean has also served as the Director of a nonprofit, continuing education college in Seattle, Washington. He is a co-founder & former board member of a Young Nonprofit Professionals Network (YNPN) chapter. Sean holds a Bachelor’s Degree in International Studies from the University of Washington and lives in Madison with his partner Ana.

Tiernan Donohue
Finance Director


Tiernan joined the DPW as Coordinated Deputy Finance Director in 2014 before taking on the role of Finance Director in 2015. Previously, she worked as the Deputy Finance Director for Val Arkoosh for Congress in Philadelphia. Tiernan also worked on Val Deming's Red to Blue Congressional race in Florida during the 2012 election cycle. She is a graduate of American University with degrees in political science and history.

Amanda Brink
Operations & Compliance Director


A transplanted Missourian, Amanda has been with the DPW since 2010 and brings a background in compliance, logistics, and grassroots coordination. She first became involved in Barack Obama's presidential bid in August 2007, and her work for the campaign consisted of grassroots mobilization in the states of Iowa, Wisconsin and Missouri. In local Missouri races, she has helped guide Democrats to victory in Republican strongholds. She has experience in business management and enjoys spending time her husband, Derek, and their two malteses, Truman and Malcolm.