data| voted98 | integer | voted in 1998 |
| 0,1 | persngrp | factor |
| personal contact attempted | 0,1 | phnscrpt |
| factor | script read to phone respondents | 7 levels |
| mailings | factor | number of mailings sent |
| 0 - 3 | appeal | factor |
| content of message | 3 levels | age |
| integer | age of respondent | |
| majorpty | factor | Democratic or Republican |
| voted96.1 | factor | |
| voted in 1996 | 0,1 | voted96.0 |
| factor | abstained in 1996 | 0,1 |
| 0 |
| No phone |
| 1 |
| Civic-Blood |
| 2 |
| Civic |
| 3 |
| Civic or Blood-Civic |
| 4 |
| Neighbor |
| 5 |
| Neighbor or Civic-Neighbor |
| 1 |
| Civic Duty |
| 2 |
| Neighborhood Solidarity |
Imai, K. 2005 . ``Do get-out-the-vote calls reduce turnout?: The importance of statistical methods for field experiments."" American Political Science Review, Vol.99, No.2, pp. 283-300.