Question: Who did John Podesta support in the 2016 US presidential campaign?

Context paragraphs:
Pizzagate conspiracy theory: Pizzagate is a debunked conspiracy theory that emerged and went viral during the 2016 United States presidential election cycle.  In the fall of 2016, the personal e-mail account of John Podesta, Hillary Clinton's campaign manager, was hacked in a spear-phishing attack and his e-mails were made public by WikiLeaks.  Proponents of the Pizzagate theory falsely claimed that the e-mails contained coded messages referring to human trafficking and connecting a number of restaurants in the United States and members of the Democratic Party with an alleged child-sex ring.  The theory has been extensively discredited by a wide array of organizations, including the District of Columbia Police Department.

John Podesta: John David Podesta (born January 8, 1949) is a columnist and former chairman of the 2016 Hillary Clinton presidential campaign.  He previously served as chief of staff to President Bill Clinton and Counselor to President Barack Obama.

Brendan Smialowski: Brendan Smialowski is an award winning freelance photographer based in Washington, D.C. He specializes in digital photography and covers national and international news.  While primarily a documentary photographer Smialowski's work includes a variety of techniques including portrait photography.  While based in Washington, D.C. he has created a large volume of work covering politics.  Smialowski regularly covers the White House and Capitol Hill.  He has covered several US Presidential campaigns including the 2008 US Presidential Campaign.

Podesta Group: The Podesta Group is a lobbying and public affairs firm based in Washington, D.C..  It was founded in 1988 by brothers John Podesta and Tony Podesta and has previously been known as Podesta Associates, podesta.com and PodestaMattoon.  The firm most recently reorganized in January 2007 after current Chairman Tony Podesta split with former business partner Dan Mattoon.

Podesta emails: In March 2016, the personal Gmail account of John Podesta, a former White House chief of staff and the chairman of Hillary Clinton's 2016 U.S. presidential campaign, was compromised in a data breach, and a collection of his emails, many of which were work-related, were stolen.  Cybersecurity researchers as well as the United States government attributed responsibility for the breach, which was accomplished via a spear-phishing attack, to the hacking group Fancy Bear, allegedly affiliated with Russian intelligence services.

NGP VAN: NGP VAN is a privately owned American company specializing in helping progressive campaigns and organizations leverage technology to meet their goals.  In 2009, the company was the largest partisan provider of campaign compliance software, used by most Democratic members of Congress.  The company's services have been utilized by clients such as the Obama 2008 presidential campaign, the Obama 2012 presidential campaign, the Bernie Sanders 2016 presidential campaign, the Hillary Clinton 2016 presidential campaign, the British Liberal Democrats, and the Liberal Party of Canada.  Its current president and CEO, Stuart Trevelyan, was a veteran of the 1992 Clinton-Gore "War Room", providing research, analysis, and whip counts to the Clinton Administration as a member of the White House Office of Legislative Affairs.

Tony Fabrizio: Anthony Fabrizio (born 1960) is an American Republican pollster and strategist.  He is the principal in Fabrizio, Lee & Associates, and was the pollster for Donald Trump's fall 2016 Presidential campaign, former Senator Bob Dole's 1996 Presidential campaign, U.S. Senator Rand Paul's U.S. Senate and 2016 Presidential campaign, and former Governor Rick Perry's 2012 Presidential campaign, among others.  He also served as a pollster for the U.S. Chamber of Commerce in the 2014 midterm elections.

Reliable Sources: Reliable Sources is a Sunday morning talk show on the cable/satellite news network CNN that focuses on analysis of the American news media, currently hosted by Brian Stelter.  The show is broadcast from 11:00 am to noon ET, from CNN's Time Warner Center studios in New York City.  The show is also broadcast around the world by CNN International.  It was initially created to cover the media's coverage of the Persian Gulf War, but has since also covered the media's coverage of the Valerie Plame affair, the Iraq War, the outing of Mark Felt as Deep Throat, and many other events and internal media stories.  More recently, it has focused on coverage of the 2016 U.S. Presidential election, and the subsequent presidential transition and Presidency of Donald Trump, the fake news epidemic, as well as the alleged Russian interference in the 2016 US presidential election, among several other topics.

Veterans for Bernie Sanders: Veterans for Bernie Sanders (also known as Vets for Bernie) was the first ever national grassroots association of military veterans to organize on behalf of a Presidential candidate, namely Bernie Sanders during the Bernie Sanders presidential campaign, 2016.  Vets for Bernie, independent from the official campaign and largely organized via social media, grew to more than 50,000 military members, and over 100,000 followers on Facebook, Twitter, and Instagram.  Founded by veterans of the Iraq war and Afghanistan war, Vets for Bernie became a key organizing force for progressives and military voters during the 2016 US Presidential campaign.  With ranks of combat veterans, the group became widely known for its backing of the Vermont Senator who once protested against the Vietnam war.

The People for Bernie Sanders: The People for Bernie Sanders (also known as People for Bernie) is a grassroots movement which arose to support the candidacy of Bernie Sanders during the Bernie Sanders presidential campaign, 2016.  People for Bernie, independent from the official campaign and largely organized via social media, grew to over 1 million followers on Facebook.  Founded by veterans of Occupy Wall Street, People for Bernie became a key organizing force for progressives during the 2016 US Presidential Campaign, including coining the hashtag #feelthebern.  Linked to other progressive groups like the National Nurses United and Democratic Socialists of America, People for Bernie became recognized for its role in mobilizing Sanders supporters and its innovative organizing strategies.

Supporting paragraphs: Pizzagate conspiracy theory John Podesta
Answer: Hillary Clinton