| Year | Republican | Democratic |
|---|---|---|
| 2020 | 232 | 306 |
| 2016 | 304 | 227 |
| 2012 | 206 | 332 |
| 2008 | 173 | 365 |
| 2004 | 286 | 251 |
| 2000 | 271 | 266 |
| 1996 | 159 | 379 |
| 1992 | 168 | 370 |
| 1988 | 426 | 111 |
| 1984 | 525 | 13 |
| 1980 | 489 | 49 |
| 1976 | 240 | 297 |
| 1972 | 520 | 17 |
| 1968 | 301 | 196 |
| 1964 | 52 | 486 |
| (In 1984, the Republican party won the highest seats in the last 15 elections) | ||
