Sources: AP
Voters in the American state of Kentucky go to the polls for a Democratic Party primary with Hillary Clinton and Bernie Sanders winning an equal number of delegates and Clinton winning the popular vote narrowly. 2016-05-17
Hillary Clinton is forecast to win the Democratic Party primary in Maryland, Pennsylvania, Connecticut and Delaware while Bernie Sanders wins Rhode Island. With her victory, Clinton came close to securing the number of delegates she needs to win the nomination. 2016-04-26
Registered Democratic voters in the U.S. state of Wyoming gather, by county, for the Wyoming Democratic caucuses. Bernie Sanders is projected to win. 2016-04-9
Voters in the U.S. state of Wisconsin go to the polls for a primary election with Ted Cruz winning the Republican Party contest and Bernie Sanders winning the Democratic Party primary. 2016-04-5
Senator Bernie Sanders is the projected winner in Alaska, Washington and Hawaii. 2016-03-26
Bernie Sanders and Ted Cruz each won their party's votes in Idaho and Utah 2016-03-23
Tulsi Gabbard resigns as vice-chair of the Democratic National Committee and endorses Vermont Senator Bernie Sanders. 2016-02-28
Voters in the American state of Nevada take part in Democratic Party caucuses, with Hillary Clinton winning against Bernie Sanders. 2016-02-20
New York businessman Donald Trump wins the Republican Party primary while Vermont Senator Bernie Sanders wins the Democratic Party primary. 2016-02-9
The Democratic National Committee suspends Vermont Senator Bernie Sanders' presidential campaign's access to its national voter database after a member of his campaign staff took advantage of a software error to review Hillary Clinton's private campaign data. In response, the campaign files a lawsuit. 2015-12-18