Pemilu 1999 merupakan pemilihan umum pertama era reformasi. Di masa ini, semangat reformasi berupa perubahan masih menggebu-gebu. PDI Perjuangan mendapat limpahan suara yang besar sehingga menjadi pemenang pemilu 1999 dengan perlehan kursi 154, perolehan tertinggi yang dicapai PDI Perjuangan selama mengikuti pemilihan umum.
Partai Golkar masih mendapatkan banyak dukungan dan berada di posisi 2.
Tabel hasil pemilu 1999
| No. | Nama Partai | Suara DPR | Kursi Tanpa SA | Kursi Dengan SA |
|---|---|---|---|---|
| 1. | PDIP | 35.689.073 | 153 | 154 |
| 2. | Golkar | 23.741.749 | 120 | 120 |
| 3. | PPP | 11.329.905 | 58 | 59 |
| 4. | PKB | 13.336.982 | 51 | 51 |
| 5. | PAN | 7.528.956 | 34 | 35 |
| 6. | PBB | 2.049.708 | 13 | 13 |
| 7. | Partai Keadilan | 1.436.565 | 7 | 6 |
| 8. | PKP | 1.065.686 | 4 | 6 |
| 9. | PNU | 679.179 | 5 | 3 |
| 10. | PDKB | 550.846 | 5 | 3 |
| 11. | PBI | 364.291 | 1 | 3 |
| 12. | PDI | 345.720 | 2 | 2 |
| 13. | PP | 655.052 | 1 | 1 |
| 14. | PDR | 427.854 | 1 | 1 |
| 15. | PSII | 375.920 | 1 | 1 |
| 16. | PNI Front Marhaenis | 365.176 | 1 | 1 |
| 17. | PNI Massa Marhaen | 345.629 | 1 | 1 |
| 18. | IPKI | 328.654 | 1 | 1 |
| 19. | PKU | 300.064 | 1 | 1 |
| 20. | Masyumi | 456.718 | 1 | – |
| 22. | PKD | 216.675 | 1 | – |
| 23. | PNI Supeni | 377.137 | – | – |
| 24. | Krisna | 369.719 | – | – |
| 25. | Partai KAMI | 289.489 | – | – |
| 26. | PUI | 269.309 | – | – |
| 27. | Partai Republik | 328.564 | – | – |
| 28. | Partai MKGR | 204.204 | – | – |
| 29. | PIB | 192.712 | – | – |
| 30. | Partai SUNI | 180.167 | – | – |
| 31. | PCD | 168.087 | – | – |
| 32. | PSII 1905 | 152.820 | – | – |
| 33. | Masyumi Baru | 152.589 | – | – |
| 34. | PNBI | 149.136 | – | – |
| 35. | PUDI | 140.980 | – | – |
| 36. | PBN | 140.980 | – | – |
| 37. | PKM | 104.385 | – | – |
| 38. | PND | 96.984 | – | – |
| 39. | PADI | 85.838 | – | – |
| 40. | PRD | 78.730 | – | – |
| 41. | PPI | 63.934 | – | – |
| 42. | PID | 62.901 | – | – |
| 43. | Murba | 62.006 | – | – |
| 44. | SPSI | 61.105 | – | – |
| 45. | PUMI | 49.839 | – | – |
| 46. | PSP | 49.807 | – | – |
| 47. | PARI | 54.790 | – | – |
| 48. | PILAR | 40.517 | – | – |
| Jumlah | 105.786.661 | 462 | 462 |