Sources: AP
A record number of electors break ranks and do not vote for their assigned candidate. Two electors from Texas vote for John Kasich and Ron Paul. Some of the electors from Washington cast three votes for Colin Powell and one vote for Faith Spotted Eagle. One elector from Hawaii votes for Bernie Sanders. 2016-12-19
Vermont Senator Bernie Sanders endorses Democratic Party rival Hillary Clinton for president at a rally in New Hampshire, effectively suspending his presidential campaign. 2016-07-12
Hillary Clinton gains a decisive win (57.6 percent to 42.4 percent) over Bernie Sanders in the Democratic Party primary. 2016-04-19
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
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
Bernie Sanders concedes the Missouri primary to Hillary Clinton, who led by 1,531 votes, 0.2 percent of those counted. Sanders says he will not ask for a recount, an option he had because the result is under the state's requirement, 0.5 percent — one-half of one percent. The Republican contest is too close to call as Donald Trump leads Ted Cruz by a similar 0.2 percent. 2016-03-17
Jeff Weaver, presidential campaign manager for Vermont Senator Bernie Sanders, says the DNC's suspending access to the Democratic voter file is part of a "pattern" of actions that suggest the DNC is not impartial. The campaign, which had notified the DNC of software problems, threatens to take the DNC to federal court if the party organization doesn't restore the campaign's access. 2015-12-18
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
Nominally independent Senator Bernie Sanders from Vermont announces that he will be seeking the Democratic Party nomination in the US presidential election. 2015-04-29