File:U.S. states (and territories) by election methods, 2016 (Democratic Party).svg - Wikimedia Commons
Maryland Presidential Primaries 2016: latest Democratic polls Apr 2016 | Statista
Democrats 2016: The Primary Map Still Favors Clinton – Sabato's Crystal Ball
Mail voting in 2020 US primaries became more common as COVID-19 spread | Pew Research Center
2016 United States presidential election - Wikipedia
Trump's big advantage: open primaries.
2016 Republican Party presidential primaries - Wikipedia
/https://static.texastribune.org/media/images/2016/05/03/Ted_Drops_Out.jpg "Cruz Ending Campaign After Indiana Loss to Trump | The Texas Tribune")
Cruz Ending Campaign After Indiana Loss to Trump | The Texas Tribune
Here's Why The 2016 Republican Presidential Primary Could Make History - ABC News
FEC releases updated presidential primary dates - Elon News Network
Political polarization and the 2016 congressional primaries
2016 Delegate Count and Primary Results - The New York Times
Some Democrats voting in GOP primaries to block Trump picks | AP News
Why Immigration May Decide the 2016 Election - New American Economy
Super Tuesday: Delegate Tallies From Presidential Primaries And Caucuses - capradio.org
Detailed Maps of Where Trump, Cruz, Clinton and Sanders Have Won - The New York Times
News Coverage of the 2016 Presidential Primaries: Horse Race Reporting Has Consequences | Shorenstein Center
2016 Republican Nomination Calendar Released for Primaries | Time
Chart: 2016 Presidential Primaries: Which Candidates Are U.S. Muslims Supporting? | Statista
The Modern History of the Republican Presidential Primary, 1976-2012 – Sabato's Crystal Ball
Donald Trump Sweeps 5 States; Hillary Clinton Takes 4 - The New York Times
United States Presidential Election of 2016 | History & Facts | Britannica
US election 2016: 7 June primary results - BBC News
United States Presidential Election of 2016 | History & Facts | Britannica
