Cardiff South East (UK Parliament constituency)

Cardiff South East was a parliamentary constituency in Cardiff, Wales. It returned one Member of Parliament to the House of Commons of the Parliament of the United Kingdom.

The constituency was created for the 1950 general election, and abolished for the 1983 general election. Its only MP was Labour's James Callaghan, who served as Prime Minister of the United Kingdom from 1976 to 1979, while still serving as the seat's MP. Its present-day equivalent is Cardiff South and Penarth.

Boundaries
1950–1974: The County Borough of Cardiff wards of Adamsdown, Roath, South, and Splott, and the Urban District of Penarth.

1974–1983: The County Borough of Cardiff wards of Adamsdown, Grangetown, Roath, Rumney, South, and Splott.

Elections in the 1970s
Note: The official Liberal candidate for Cardiff South East in 1979, Christopher Bailey, deliberately failed to submit his nomination papers in time and advised Liberal voters to vote Conservative. He was subsequently expelled from the Liberal Party.

This election was remembered for when Pat Arrowsmith heckled Callaghan throughout the election declaration. During the customary victory speech, Callaghan continued to be interrupted throughout and Callaghan remarked it was the first time he had ‘conducted a duet’ whilst giving a victory speech. When Arrowsmith refused to desist, Callaghan and the other candidates left the stage. Arrowsmith (who had been arrested in Cardiff the day before the election) made a short statement about Northern Ireland. These scenes were broadcast live on BBC Election 79.