1963 - February - Formation of the party; First party platform adopted,calling for tax equity, ending racial discrimination, greater economic parity, electoral reform and a host of social programs. Three months later contested the general election with just nine candidates. Six were successful - Arnold Francis (party leader), Walter Robinson (Deputy leader), Mrs. Lois Browne-Evans (Bermuda's first black elected woman Member of Parliament), Russell Dismont, Cecil Clarke and Mrs. Dorothy Thompson.

1964 - Conservative parliamentarians form the United Bermuda Party (UBP).

1965 - PLP faces its first split over a disagreement on how to achieve its aims. All parliamentarians except Lois Browne-Evans quit the party.

1966 - Walter Robinson and Dorothy Thompson return to the party fold. Mr. Robinson becomes party leader. The party sends a five person delegation, including two parliamentarians, to the Constitutional conference in London and succeeds in removing the `plus' vote and increasing the number of electoral constituencies to 40 (from 36), but the delegation refused to endorse the majority report, feeling it did not go far enough in removing electoral injustices.

1968 -Wins ten seats in the first election under the new Constitution. Party Leader Walter Robinson loses his Hamilton West seat and Lois Browne-Evans elected the party's parliamentary leader to become the first woman Opposition Leader in the Commonwealth.

1972 - Mr. Robinson returns to Parliament and party leadership after a general election which boosts the party's share of the popular vote but leaves the number of seats unchanged.

1976 - Mr. Robinson quits active politics. Mrs Browne-Evans becomes parliamentary leader and Opposition Leader again. L. Frederick Wade becomes Deputy Leader. General election increases number of parliamentarians to 15. Popular vote rises to 44.6 percent.

1977 - The party launches its Independence Action Plan to promote discussion and awareness of its independence agenda. Also campaigns against capital punishment and participates in the Pitt Commission to investigate the causes of riots in December.

1979 - Constitutional Conference at Warwick Camp. The conference is stalemated on the issue of election system changes and it is agreed that the matter will be decided through a general election. The party manages to get the conference to agree to introduce compulsory voter registration and increases the Opposition's quota of Senate seats by one.

1980 - General election. Bermuda sees its largest voter turnout ever - 24,000 of 31,000 eligible voters, as a result of compulsory registration. Party runs a full slate of 40 candidates, wins 18 seats and 46 percent of votes cast.

1983 - A snap election loses the party four seats in parliament. Gilbert Darrell blames Mrs. Browne-Evans' leadership for the losses and challenges her at a special delegates conference. The bid fails.

1985 - Internal discontent goes public as Mr. Darrell's supporters fight their case in the media. PLP disciplinary machinery goes into action and expels six dissidents, including four MPs, Gilbert Darrell, Austin Thomas, Lionel Simmons and Walter Brangman, who formed the National Liberal Party. Two of the dissidents, former MP Calvin Smith and Lionel Simmons later return to the party. Premier Sir John Swan takes advantage of the disarray to call a snap election. The PLP fields just 30 candidates, loses seven seats and its share of votes drop to 31 percent. Opposition Leader Lois Browne-Evans is replaced by L. Frederick Wade who immediately begins to reconstruct the party. Walter Roberts becomes Deputy Leader.

1989 - Party regains eight seats in general election and increases its popular share of the vote to 37 percent. One of those seats, St. George's North, is held by the PLP for the first time following a determined campaign by Jennifer Smith.

1992 - Former Leader Walter Robinson dies at age 74.

1993 - Another general election. PLP fields a full slate and increases its number of seats to 18, and its share of the vote to 46.7 percent, its highest yet. Premier Sir John Swan surprises the electorate by raising the question of independence.

1994 - Jennifer Smith challenges Walter Roberts for the deputy leadership and wins. PLP launches an abstention campaign in response to a planned referendum on Independence.

1995 - Independence referendum held under controversial circumstances. PLP declares a successful abstention campaign citing low voter turnout. Referendum results force Sir John Swan to resign.

1996 - Jennifer Smith becomes Party Leader after Mr. Wade's death. She had acted as leader on a number of occasions due to Mr. Wade's ill health. As acting leader, Ms Smith led a successful censure motion against Premier David Saul who later resigned.

1997 - Founder Wilfred Allen dies, aged 88.

1998 - In October the party launches its `New Bermuda' platform, which makes no mention of Independence, and goes on to win its first general election, bruising UBP as the new Government achieves a 26-14 majority. Jennifer Smith sworn in as Premier and the first PLP Cabinet sworn in. Lois Browne Evans becomes the Island's first politically appointed Attorney General.

1999 - PLP eliminates annual voter registration in favour of a system of rolling registration.

2000 - Cabinet Minister Arthur Hodgson challenges Ms Smith for the leadership, fails by a large majority and is relieved of his ministerial responsibility. Ms Smith tables a paper on electoral reform.

2002 - A group of dissenters force a parliamentary caucus vote to remove the Premier. The vote is tied. Observers question whether it would have had any legal effect. House of Assembly approves Boundaries Commission report recommending the Island be divided into 36 single seat constituencies. David Allen, the first PLP Minister of Tourism and one of the party's early members, dies.

2003 - Order in Council passed giving effect to the Boundaries Commission's recommendations and realising the party's long held ambition for an electoral system based on "one person, one vote each vote of equal value".