When establishing urban election areas, various geographical and administrative units are considered. A Census Block is a fundamental statistical area used by census bureaus for data collection and population enumeration. Its boundaries are meticulously defined and maintained to ensure accurate demographic representation. Therefore, dividing a census block for electoral purposes is generally avoided except under exceptional circumstances because it can compromise the integrity of statistical data and lead to inaccuracies in population counts and representation.
Conversely, Wards and Mohallahs (neighborhoods) are administrative or local government divisions that are more flexible. Their boundaries can often be adjusted or subdivided to create suitable election areas without significantly impacting core statistical data. These divisions are commonly used as electoral units and can be modified to accommodate changes in population or administrative needs, unlike the more rigid structure of a census block. Thus, only the census block is typically protected from division.