| Country | Vote share of new parties | Stable participation of significant contenders election-to-election | Stability of significant parties, from one election to the next | Mean Z-score | |||
| President | Parliament | President | Parliament | President | Parliament | ||
| Uruguay | 1.03 | 1.13 | 1.33 | 1.15 | 2.11 | 1.67 | 1.40 |
| Mexico | 0.97 | 0.64 | 1.33 | 1.15 | 2.11 | 1.53 | 1.29 |
| USA | 0.88 | 1.50 | 0.89 | 1.15 | 0.83 | 1.67 | 1.15 |
| Dominican Republic | 0.99 | 1.01 | 1.03 | 0.75 | 1.45 | 1.42 | 1.11 |
| Chile | 0.32 | 1.17 | 0.34 | 0.92 | 0.41 | 1.53 | 0.78 |
| Honduras | 0.48 | -0.11 | 1.33 | 1.15 | 0.18 | -0.12 | 0.49 |
| Brazil | 1.09 | 0.73 | 0.30 | 0.46 | 0.10 | 0.17 | 0.47 |
| Costa Rica | 0.65 | -0.38 | 0.98 | 0.34 | -0.09 | -0.37 | 0.19 |
| El Salvador | 0.32 | -0.20 | 0.79 | 0.29 | 0.18 | -0.37 | 0.17 |
| Nicaragua | 0.44 | 1.28 | 0.25 | -0.75 | -0.06 | -0.33 | 0.14 |
| Panama | 0.65 | 1.16 | -0.74 | 0.11 | -0.64 | -0.30 | 0.04 |
| Russia | 0.74 | -0.53 | 0.67 | -0.52 | 0.64 | -0.80 | 0.03 |
| Paraguay | -0.02 | -0.56 | -0.74 | -0.29 | -0.48 | -0.30 | -0.40 |
| Colombia | -1.58 | -1.14 | -0.98 | 0.52 | -1.06 | -0.48 | -0.79 |
| Bolivia | 0.12 | -0.66 | -0.98 | -1.73 | -0.68 | -0.90 | -0.81 |
| Ecuador | -1.15 | -0.84 | -0.49 | -0.87 | -0.71 | -0.83 | -0.82 |
| Peru | -1.35 | -1.55 | -0.93 | -2.08 | -0.64 | -1.12 | -1.28 |
| Argentina | -1.03 | -1.57 | -1.26 | -1.29 | |||
| Guatemala | -1.92 | -1.16 | -1.28 | -0.93 | -1.22 | -1.30 | -1.30 |
| Venezuela | -1.62 | -1.48 | -1.52 | -1.50 | -1.18 | -1.26 | -1.43 |