| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | 1973 Mexican legislative election - Results |  |  |  |  |
| 3 | Party | Votes | % | Seats | +/- |
| 4 | Institutional Revolutionary Party | 10,458,618 | 77.4 | 189 | +11 |
| 5 | National Action Party | 2,207,069 | 16.3 | 25 | +5 |
| 6 | Popular Socialist Party | 541,833 | 4.0 | 10 | 0 |
| 7 | Authentic Party of the Mexican Revolution | 272,339 | 2.0 | 7 | +2 |
| 8 | Non-registered candidates | 36,858 | 0.3 | 0 | 0 |
| 9 | Invalid/blank votes | 1,493,267 | – | – | – |
| 10 | Total | 15,009,984 | 100 | 231 | +18 |
| 11 | Source: Nohlen | Source: Nohlen | Source: Nohlen | Source: Nohlen | Source: Nohlen |

Question: What proportion of seats did the Institutional Revolutionary Party win in the 1973 election?
Answer: The Institutional Revolutionary Party won 189 of the 231 seats.