Fall 2017 JPI
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Table 3: Corrected Models vs. Mozaffar’s Models<br />
District Magnitude (logged)<br />
(1a) (1b) (3a) 0.0198 (3b) 0.0432 (4a) (4b)<br />
-0.126 -0.0170<br />
-2.672 ∗∗∗ 3.340<br />
(-0.61) (-0.09) (0.09) (0.22) (-4.05) (1.68)<br />
Proximity -3.366 ∗∗∗ -2.578 ∗∗∗ -3.647 ∗∗∗ -3.062 ∗∗∗ -2.059 ∗∗ -2.107 ∗∗∗<br />
(-4.63) (-3.94) (-4.74) (-4.48) (-3.07) (-3.75)<br />
Proximity 1.283 ∗∗∗ 0.579 ∗ 1.261 ∗∗∗ 0.682 ∗∗ 0.822 ∗∗∗ 0.522 ∗<br />
X Effective Number of Presidential<br />
Candidates<br />
(5.97) (2.33) (5.26) (2.69) (4.22) (2.64)<br />
Effective Number of Presidential<br />
Candidates<br />
0.609 ∗∗∗ 0.576 ∗∗∗ 0.314 ∗<br />
(4.23) (4.01) (2.58)<br />
Ethnopolitical Fragmentation -0.677 -1.163 -1.917 5.823<br />
(-0.33) (-0.65) (-1.85) (1.53)<br />
Ethnopolitical Group Concentration 0.0771 -0.615 -0.823 ∗ 1.599<br />
(0.09) (-0.77) (-2.28) (0.96)<br />
Ethnopolitical Fragmentation 0.656 1.406 -2.980<br />
X Concentration (0.49) (1.20) (-1.41)<br />
District Magnitude X Fragmentation<br />
1.701 ∗∗∗ 4.665 ∗∗<br />
X Concentration (4.30) (3.39)<br />
Fragmentation<br />
-8.701 ∗∗<br />
X District Magnitude (-3.45)<br />
Concentration -1.976<br />
X District Magnitude (-1.87)<br />
Constant 2.773 ∗∗∗ 2.038 ∗∗∗ 2.387 2.253 ∗ 6.103 ∗∗∗ -0.377<br />
(8.65) (6.24) (1.92) (2.09) (5.37) (-0.13)<br />
Observations 53 53 53 53 53 53<br />
R 2 0.43 0.58 0.52 0.64 0.65 0.82<br />
F 12.11 16.67 8.251 11.68 14.53 18.99<br />
t statistics in parentheses<br />
∗ p < 0.05, ∗∗ p < 0.01, ∗∗∗ p < 0.001<br />
The most significant finding from this actual fully-specified model is the fact that neither<br />
ethnopolitical fragmentation nor district magnitude have a significant effect on their own. Instead,<br />
they only have a significant effect in their interaction. This indicates that ethnopolitical fragmentation<br />
and district magnitude have a cross-over interaction. Thus, there is no overall effect of either<br />
ethnopolitical fragmentation or district magnitude, but instead the effect of ethnopolitical<br />
fragmentation on the number of parties is dependent on the district magnitude and vice versa.<br />
Specifically, that ethnopolitical fragmentation has a reductive effect as MSG theorized only when<br />
district magnitude is sufficiently large.<br />
<strong>JPI</strong> <strong>Fall</strong> <strong>2017</strong>, pg. 63