| ei_NZ_2002 | Ecological inference data sets of the 2002 New Zealand General Election. |
| ei_NZ_2005 | Ecological inference data sets of the 2005 New Zealand General Election. |
| ei_NZ_2008 | Ecological inference data sets of the 2008 New Zealand General Election. |
| ei_NZ_2011 | ei.Datasets: Real datasets for assessing ecological inference algorithms, Social Science Computer Review, forthcoming. |
| ei_NZ_2014 | Ecological inference data sets of the 2014 New Zealand General Election. |
| ei_NZ_2017 | Ecological inference data sets of the 2017 New Zealand General Election. |
| ei_NZ_2020 | Ecological inference data sets of the 2020 New Zealand General Election. |
| ei_SCO_2007 | Ecological inference data sets of the 2007 Scottish National Assembly. |
| merge_small_options | Merge small parties and/or candidates |