Getting out the vote in different electoral contexts: the effect of impersonal voter mobilization techniques in middle and high salience Norwegian elections

Figures & data

Table 1. SMS text campaign/telephone campaign: control and treatment groups.

SMS experiment in 2017	Treatment	Control
Below the age of 30	23,305	344,440
Over the age of 30	116,214	1,770,870
Total	139,519	2,115,310
Telephone experiment
Young voters eligible to vote for the first time in 2017	32,311	54,780
Young voters eligible to vote for the first time in 2019	26,081	88,273

Table 2. Experimental results in 2015: base turnout and change in turnout.

	Control group turnout	Intention to Treat (ITT)		ITT with control variables		Complier Average Causal Effect (CACE)		N
		Effect	s.e.	Effect	s.e.	Effect	s.e.
Below 30	45.33	4.58	.48	3.31	.47	6.16	.64	66,086
30 or more	72.66	.96	.20	.38	.19	1.36	.27	389,107

*The following social background control variables are included: sex, age, and married.

Table 3. Experimental outcomes for the 2019 phone call study (N = 114,354).

	Turnout (%)	ITT (s.e)	ITT with controls* (s.e.)	CACE (s.e)
Voted Control group	54.2
Voted Treatment group	54.8	.63 (.35)	.66 (35)	3.14 (1.68)

*The following social background control variables are included: gender and age.

Table 4. Experimental outcomes for the text messaging study.

	Voted Control group (%)	Voted Treatment group (%)	ITT (s.e)	ITT with control variables	CACE (s.e)	N
Whole sample	82.56	82.92	0.36(.10)	0.04(0.11)	0.41(.12)	2,254,829
Age 30 or more	84.88	85.32	0.44(.11)	−0.14(0.11)	0.49(.12)	1,887,084
Below age 30	70.67	71.02	0.35(.31)	0.43(0.31)	0.39(.35)	367,745

The following social background control variables are included: male, age, age-squared, and household size.

Table 5. Experimental outcomes for the phone call study (N = 87,091).

	Turnout (%)	ITT (s.e)	ITT with controls	CACE (s.e)
Voted Control group	69.48	−		−
Voted Treatment group	69.73	0.25(.32)	0.20(0.31)	1.05(1.37)

The following social background control variables are included: male, age, and household size.