Comparing Experimental and Matching Methods Using a Large-Scale Voter Mobilization Experiment

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Kevin Arceneaux, Donald P. Green, Alan S. Gerber

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Sample size: 
Using the list of registered voters in Iowa and Michigan, a total of 60,000 households with listed phone numbers were randomly assigned to be called; the corresponding control group contains 1,846,885 randomly assigned households with listed phone numbers. Because a handful of small counties in the Michigan subsample did not provide 2002 voter records, we removed 1565 observations, bringing the treatment group total to 59,972 and the control group total to 1,845,348. The voter file also contained a large number of names without phone numbers.
Randomization procedure: 
The congressional districts of each state were divided into ‘‘competitive’’ and ‘‘uncompetitive’’ strata. Within each stratum, households containing one or two registered voters were randomly assigned to treatment and control groups. For two-person households, just one representative from each household was assigned to treatment or control; if there was another voter in the household, he or she was ignored for purposes of calling and statistical analysis.
Get-out-the-vote (GOTV) phone calls
Treatment administration: 
Outcome measures: 
Vote in the 2002 mid-term elections
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Data file numbersort ascending Description File format Size File url
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D026F25 Dataset - IA_MI_merge_identicaldata_dummies .csv 1398308864 Download file
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D026F23 Dataset - exvaruuhc_hc .csv 255730688 Download file
D026F22 Dataset - exvaruu_lc .csv 256143360 Download file
D026F21 Dataset - exvaruu .csv 259276800 Download file
D026F20 Dataset - exvar_lc .csv 196016128 Download file
D026F19 Dataset - exvar_hc .csv 195630080 Download file
D026F18 Dataset - exvar .csv 199313408 Download file
D026F17 Dataset - unlistedexact_lc .dta 77850624 Download file
D026F16 Dataset - unlistedexact_hc .dta 77850624 Download file
D026F14 Dataset - listedexact_lc .dta 60014592 Download file
D026F13 Dataset - listedexact_hc .dta 60014592 Download file
D026F12 Dataset - 2006_listedexact .dta 57684 Download file
D026F11 Dataset - merge040504 .dta 67680 Download file
D026F10 Dataset - merge_identicaldata2 .dta 116018 Download file
D026F09 Dataset - IA_MI_merge_identicaldata_dummies .dta 725213184 Download file
D026F08 Dataset - IA_MI_merge_identicaldata .dta 118802432 Download file
D026F07 Dataset - exvaruuhc_hc .dta 135427072 Download file
D026F06 Dataset - exvaruu_lc .dta 135661568 Download file
D026F05 Dataset - exvaruu .dta 137233408 Download file
D026F04 Dataset - exvar_lc .dta 104472576 Download file
D026F03 Dataset - exvar_hc .dta 104247296 Download file
D026F02 Dataset - exvar .dta 105404416 Download file
D026F01.1 ReadMe file .txt 1117 Download file