- Electorate – 40,072,970
- Turnout – 72.8%
Chart: Seats won at the 1974 October general election
| Lab — 319 |
 |
| Con — 277 |
 |
| Lib Dem — 13 |
 |
| Others — 26 |
 |
Table: 1974 October general election results summary
| Party |
Seats |
Gain |
Loss |
Net |
Votes |
% |
±% |
| Labour |
319 |
20 |
2 |
+18 |
11,457,079 |
39.3 |
+2.0 |
| Conservative |
277 |
2 |
22 |
–20 |
10,462,565 |
35.8 |
–2.1 |
| Liberal |
13 |
1 |
2 |
–1 |
5,346,704 |
18.3 |
–1.0 |
| Scottish National |
11 |
4 |
0 |
+4 |
839,617 |
2.9 |
+0.9 |
| Ulster Unionist |
6 |
0 |
1 |
–1 |
256,065 |
+0.1 |
+0.1 |
| Plaid Cymru |
3 |
1 |
0 |
+1 |
166,321 |
0.6 |
+0.1 |
| Vanguard Unionist |
3 |
0 |
0 |
0 |
62,262 |
0.3 |
+0.1 |
| Democratic Unionist |
1 |
0 |
0 |
0 |
59,451 |
0.3 |
+0.1 |
| SDLP |
1 |
0 |
0 |
0 |
154,193 |
0.6 |
+0.1 |
| Independent Republican |
1 |
1 |
0 |
+1 |
32,795 |
0.2 |
+0.2 |
Source: UK Data Service, British Election Studies
BBC coverage of the 1974 October general election results
