The Convergence Coefficient across Political Systems

Table 4

The convergence coefficient in proportional systems.

	Israel	Turkey		Poland
	1996	1999	2002	1997
Weight of policy differences (𝛽)
Central Est.^a of 𝛽; (conf. Int.^b)	1.207; (1.076, 1.338)	0.375; (0.203, 0.547)	1.520; (1.285, 1.755)	1.739; (1.512, 1.966)
Electoral variance (trace∇=𝜎^2)
𝜎^2	1.732	2.34	2.33	2.00
Probability of voting for lowest valence party (party 1, 𝜌1=∑^𝑝𝑘=1exp(𝜆𝑘−𝜆1)^−1)
	TW^c	FP^d	ANAP^d	ROP^e
Central Est.^a of 𝜌1; (conf. Int.^b)	𝜌^ITW= 0.014; (0.006, 0.034)	𝜌FP=0.08; (0.046, 0.145)	𝜌^TANAP=0.08 (0.038, 0.133)	𝜌^PROP=0.007 (0.002, 0.022)
Convergence coefficient (𝑐≡𝑐(𝝀,𝛽,𝜎^2)=2𝛽[1−2𝜌1]𝜎^2)
Central Est.^a of 𝑐; (conf. Int.^b)	4.06; (3.474, 4.579)	1.49; (0.675, 2.234)	5.75; (4.388, 7.438)	5.99; (5.782, 7.833)

aCentral Est.: central estimate.
^bConf. Int.: confidence intervals.
^cIsrael: TW: Third Way.
^dTurkey: DYP: True Path Party.
^ePoland: ROP: Movement for Reconstruction of Poland.