1984 Cynon Valley by-election

1984 Cynon Valley by-election

← 1983 3 May 1984 1987 →
Constituency of Cynon Valley
Turnout	65.7% ( 7.7%)
First party Second party   SDP Candidate Ann Clwyd Felix Aubel Party Labour SDP Popular vote 19,389 6,554 Percentage 58.8 19.9 Swing 2.8% 0.7%   Third party Fourth party   PC Candidate Clayton Jones James Arbuthnot Party Plaid Cymru Conservative Popular vote 3,619 2,441 Percentage 11.0 7.4 Swing 1.8% 6.8%
MP before election Ioan Evans Labour Elected MP Ann Clwyd Labour

The 1984 Cynon Valley by-election was a parliamentary by-election held on 3 May 1984 for the British House of Commons constituency of Cynon Valley.