Democratic U.S. presidential candidate Hillary Clinton speaks as rival Bernie Sanders listens at the Democratic U.S. presidential candidates' debate in Flint, Michigan, March 6, 2016 (Photo: Reuters)
Here is a list of the US states and territories won by each of the five remaining Republican and Democratic presidential candidates in the 2016 White House nominating contests held since February 1:
Forty-three contests have been held to date, including in Pennsylvania and the four other primaries on Tuesday.
A total of 2,383 delegates are needed to secure the party's presidential nomination, including the so-called "super-delegates," who have the right to vote for whomever they choose at the nominating convention in July.
Former secretary of state Hillary Clinton has a commanding advantage over Senator Bernie Sanders on the super-delegate front.
Breakdown of delegates: 1,654 pledged after state races, plus 502 super-delegates
25 states and territories won:
Alabama; American Samoa; Arkansas; Arizona; Connecticut; Delaware, Florida; Georgia; Illinois; Iowa; Louisiana; Maryland; Massachusetts; Mississippi; Missouri; New York; Nevada; North Carolina; Northern Mariana Islands; Ohio; Pennsylvania; South Carolina; Tennessee; Texas; Virginia.
Breakdown of delegates: 1,332 pledged after state races, plus 42 super-delegates
18 contests won:
Alaska; Colorado; Hawaii; Idaho; Kansas; Maine; Michigan; Minnesota; Nebraska; New Hampshire; Oklahoma; Rhode Island; Utah; Vermont; Washington; Wisconsin; Wyoming and the contest involving US Democrats living abroad.
The GOP has held 40 contests. Six states and territories -- American Samoa, Colorado, Guam, North Dakota, Virgin Islands and Wyoming -- select their delegates without a primary preference vote, but through conventions or party meetings. Ted Cruz won the delegate selections in Colorado and Wyoming.
A total of 1,237 delegates are needed to secure the presidential nomination. The Republican Party does not use super-delegates, although a handful of "unbound" delegates head to the convention with the ability to vote for whomever they choose.
27 states and territories won:
Alabama; Arizona; Arkansas; Connecticut; Delaware; Florida; Georgia; Hawaii; Illinois; Kentucky; Louisiana; Maryland; Massachusetts; Michigan; Mississippi; Missouri; Nevada; New Hampshire; New York; North Carolina; Northern Mariana Islands; Pennsylvania; Rhode Island; South Carolina; Tennessee; Vermont; Virginia.
Nine states won:
Alaska; Idaho; Iowa; Kansas; Maine; Oklahoma; Texas; Utah; Wisconsin.
1 state won:
Three states and territories won:
Minnesota; Puerto Rico; Washington, DC