| country | PARTY | seats | seat share | sample | sample share | weight (d/f) |
| ARGENTINA[1] | PJ | 69 | 0.531 | 24 | 0.353 | 1.50385 |
| ARGENTINA | UCR | 26 | 0.200 | 19 | 0.279 | 0.71579 |
| ARGENTINA | FREPASO | 23 | 0.177 | 11 | 0.162 | 1.09371 |
| ARGENTINA | OTHER | 12 | 0.092 | 14 | 0.206 | 0.44835 |
| ARGENTINA | ALL | 130 | 1.000 | 68 | 1.000 | 1.00000 |
| BOLIVIA[2] | MNR | 26 | 0.200 | 23 | 0.311 | 0.64348 |
| BOLIVIA | ADN | 33 | 0.254 | 9 | 0.122 | 2.08718 |
| BOLIVIA | MIR | 25 | 0.192 | 7 | 0.095 | 2.03297 |
| BOLIVIA | UCS | 21 | 0.162 | 17 | 0.230 | 0.70317 |
| BOLIVIA | CONDEPA | 17 | 0.131 | 6 | 0.081 | 1.61282 |
| BOLIVIA | OTHER | 8 | 0.062 | 12 | 0.162 | 0.37949 |
| BOLIVIA | ALL | 130 | 1.000 | 74 | 1.000 | 1.00000 |
| BRAZIL[3] | PMDB | 107 | 0.209 | 16 | 0.232 | 0.89949 |
| BRAZIL | PFL | 89 | 0.173 | 12 | 0.174 | 0.99756 |
| BRAZIL | PSDB | 62 | 0.121 | 10 | 0.145 | 0.83392 |
| BRAZIL | PT | 49 | 0.096 | 9 | 0.130 | 0.73229 |
| BRAZIL | PPB | 36 | 0.070 | 6 | 0.087 | 0.80702 |
| BRAZIL | OTHER | 170 | 0.331 | 16 | 0.232 | 1.42909 |
| BRAZIL | ALL | 513 | 1.000 | 69 | 1.000 | 1.00000 |
| COLOMBIA[4] | PSC | 40 | 0.247 | 14 | 0.222 | 1.11111 |
| COLOMBIA | PL | 88 | 0.543 | 41 | 0.651 | 0.83469 |
| COLOMBIA | OTHER | 34 | 0.210 | 8 | 0.127 | 1.65278 |
| COLOMBIA | ALL | 162 | 1.000 | 63 | 1.000 | 1.00000 |
| COSTA RICA[5] | PLN | 28 | 0.491 | 25 | 0.481 | 1.02175 |
| COSTA RICA | PUSC | 25 | 0.439 | 23 | 0.442 | 0.99161 |
| COSTA RICA | OTHER | 4 | 0.070 | 4 | 0.077 | 0.91228 |
| COSTA RICA | ALL | 57 | 1.000 | 52 | 1.000 | 1.00000 |
| CHILE[6] | PDC | 37 | 0.308 | 31 | 0.333 | 0.92500 |
| CHILE | PPD | 15 | 0.125 | 11 | 0.118 | 1.05682 |
| CHILE | PS | 15 | 0.125 | 13 | 0.140 | 0.89423 |
| CHILE | RN | 30 | 0.250 | 23 | 0.247 | 1.01087 |
| CHILE | UDI | 15 | 0.125 | 11 | 0.118 | 1.05682 |
| CHILE | OTHER | 8 | 0.067 | 4 | 0.043 | 1.55000 |
| CHILE | ALL | 120 | 1.000 | 93 | 1.000 | 1.00000 |
| DOMINICAN REPUBLIC[7] | PRD | 57 | 0.475 | 29 | 0.468 | 1.01552 |
| DOMINICAN REPUBLIC | PRSC | 50 | 0.417 | 19 | 0.306 | 1.35965 |
| DOMINICAN REPUBLIC | PLD | 13 | 0.108 | 13 | 0.210 | 0.51667 |
| DOMINICAN REPUBLIC | OTHER | 0 | 0.000 | 1 | 0.000 | |
| DOMINICAN REPUBLIC | ALL | 120 | 1.000 | 62 | 1.000 | 1.00000 |
| ECUADOR[8] | PSC | 27 | 0.329 | 24 | 0.338 | 0.97409 |
| ECUADOR | PRE | 19 | 0.232 | 14 | 0.197 | 1.17509 |
| ECUADOR | DP | 11 | 0.134 | 10 | 0.141 | 0.95244 |
| ECUADOR | PACH | 8 | 0.098 | 8 | 0.113 | 0.86585 |
| ECUADOR | ID | 4 | 0.049 | 3 | 0.042 | 1.15447 |
| ECUADOR | FRA | 3 | 0.037 | 3 | 0.042 | 0.86585 |
| ECUADOR | OTHER | 10 | 0.122 | 9 | 0.127 | 0.96206 |
| ECUADOR | ALL | 82 | 1.000 | 71 | 1.000 | 1.00000 |
| MEXICO[9] | PRI | 239 | 0.478 | 64 | 0.520 | 0.91866 |
| MEXICO | PAN | 121 | 0.242 | 35 | 0.285 | 0.85046 |
| MEXICO | PRD | 125 | 0.250 | 23 | 0.187 | 1.33696 |
| MEXICO | OTHER | 15 | 0.030 | 1 | 0.008 | 3.69000 |
| MEXICO | ALL | 500 | 1.000 | 123 | 1.000 | 1.00000 |
| PERU[10] | C95 | 67 | 0.558 | 52 | 0.598 | 0.93413 |
| PERU | UPP | 17 | 0.142 | 12 | 0.138 | 1.02708 |
| PERU | APRA | 8 | 0.067 | 7 | 0.080 | 0.82857 |
| PERU | OTHER | 28 | 0.233 | 16 | 0.184 | 1.26875 |
| PERU | ALL | 120 | 1.000 | 87 | 1.000 | 1.00000 |
| URUGUAY[11] | PC | 32 | 0.323 | 22 | 0.301 | 1.07254 |
| URUGUAY | PN | 31 | 0.313 | 22 | 0.301 | 1.03903 |
| URUGUAY | FA | 31 | 0.313 | 25 | 0.342 | 0.91434 |
| URUGUAY | OTHER | 5 | 0.051 | 4 | 0.055 | 0.92172 |
| URUGUAY | ALL | 99 | 1.000 | 73 | 1.000 | 1.00000 |
| VENEZUELA[12] | COPEI | 53 | 0.264 | 18 | 0.261 | 1.01078 |
| VENEZUELA | AD | 55 | 0.274 | 18 | 0.261 | 1.04892 |
| VENEZUELA | CAUSA R | 40 | 0.199 | 13 | 0.188 | 1.05626 |
| VENEZUELA | MAS | 24 | 0.119 | 8 | 0.116 | 1.02985 |
| VENEZUELA | CONV | 26 | 0.129 | 9 | 0.130 | 0.99171 |
| VENEZUELA | OTHER | 3 | 0.015 | 3 | 0.043 | 0.34328 |
| VENEZUELA | ALL | 201 | 1.000 | 69 | 1.000 | 1.00000 |