| a |
Changes in number of total population |
| b |
Changes in numbers of eligible voters |
| c |
Changes in numbers of registered voters |
| d |
Changes in distribution of total population |
| e |
Changes in distribution of eligible voters |
| f |
Changes in distribution of registered voters |
| g |
Changes in administrative boundaries |
| h |
Change in government |
| i |
Specified number of parliamentary sessions |
| j |
National census |
| k |
Boundaries redrawn every____period of years |
| l |
Other |
| m |
Not applicable |
| |
Not included in research |
| |
Several applicable answers |