Table 7: Model Fit with Various Measures of State Initiative Process
	Initiative	Pure	Legislative	Qualify	Average
	& ref.	initiative	insulation	difficulty	annual use
Campaign Finance Policy
Ltd labor contributions	0.323	0.354	0.351	0.358	0.403
Ltd. party contributions	0.159	0.232	0.177	0.220	0.147
Ltd. corporate contributions	0.550	0.563	0.582	0.576	0.604
Index of contrib. Regs.	0.339	0.391	0.390	0.389	0.448
Abortion Policy
Restrictiveness index*	0.720	0.710	0.740	0.740	0.750
Internal Political Efficacy
Better informed than others	0.133	0.130	0.131	0.133	0.135
More qualified to participate	0.154	0.152	0.164	0.156	0.157
Politics not complicated	0.140	0.144	0.142	0.141	0.144
Internal efficacy index	0.213	0.211	0.220	0.215	0.218
External Political Efficacy
Officials don't care	0.072	0.078	0.077	0.072	0.074
Have no say	0.073	0.073	0.080	0.075	0.082
External efficacy index	0.029	0.028	0.037	0.032	0.041
Cell entries are adjusted R2 from multivariate modes.