Everyone is talking about "one person, one vote." Almost nobody is explaining what CAB3 actually does to the boundaries of your constituency and why that matters more than the slogan.
Under Section 161 of the 2013 constitution, the Zimbabwe Electoral Commission must redraw constituency boundaries once every ten years, as soon as possible after a national population census.
Zimbabwe conducted its census in 2022. Zec used that data to complete a delimitation exercise in early 2023, drawing 210 constituencies with a target of roughly 27,640 registered voters each.
A constitutionally permitted 20% variance above or below that average was allowed meaning no constituency should have had fewer than about 22 100 or more than about 33 200 voters.
Those 2023 boundaries are the ones in force today. Under the current five-year parliamentary term, the next general election would fall in 2028, triggering a fresh delimitation exercise tied to a new census.
CAB3 proposes extending parliamentary and presidential terms from five to seven years. If passed, the next general election would fall in 2030, not 2028. Section 161(2) of the constitution requires that delimitation be completed at least six months before polling day for the new boundaries to apply to that election. A fresh census would need to precede any new delimitation.
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In practice, this means the boundaries drawn on 2022 population data already three years old will govern elections in 2030, and possibly not be replaced until 2032 or later. That is a decade of constituency boundaries built on a single snapshot of a country in significant demographic flux.
Zimbabwe's urban population has grown steadily while rural areas, particularly in Manicaland and Matabeleland, have experienced out-migration driven by economic pressure.
High-density Harare suburbs including Budiriro, Kuwadzana, and Glen Norah, as well as satellite towns such as Epworth and Chitungwiza, have absorbed substantial population growth since 2022.
The constitutional tolerance band of 20% is not a buffer that absorbs growth indefinitely. As urban constituencies fill with voters while rural ones thin out, the mathematical weight of a single vote in a densely populated urban seat shrinks relative to its rural equivalent.
A vote cast in an under-populated rural constituency carries more influence over parliamentary composition than a vote cast in an over-populated urban one.
Delay that correction by two years, and the distortion compounds.
The Election Resource Centre made precisely this point in its analysis of CAB3, warning that unequal constituencies would translate into unequal influence over the presidential election, negating the principle of one person, one vote.
The new delimitation body and who controls it
CAB3 does not simply freeze boundaries. It also restructures who draws them. The bill creates a new Zimbabwe Electoral Delimitation Commission to take over boundary delimitation from Zec. The problem, according to legal experts, is who appoints it.
The Law Society of Zimbabwe, in formal submissions dated May 15, warned that the proposed Zimbabwe Electoral Delimitation Commission lacks adequate institutional independence because its members would be appointed directly by the president.
The LSZ concluded that the transfer of delimitation authority would be inconsistent with the right to free, fair and regular elections under Section 67 of the constitution and with Zimbabwe's obligations under international law.
In other words, CAB3 does not merely delay boundary corrections. It hands the redrawing of those boundaries, whenever it eventually occurs, to a body the president alone assembles.
Who wins, who loses
The political geometry here is not subtle. Rural constituencies, which have historically formed the bedrock of Zanu PF's parliamentary majority, are losing population. Urban constituencies, which have trended toward the opposition, are gaining it. Freezing boundaries drawn on 2022 data for an additional two years preserves the representation advantage of areas that are shrinking in real life.
This is the structural consequence that the one-person-one-vote debate has largely skipped past. The argument is not merely about whether citizens or Parliament elects the president. It is about whether, when Parliament eventually does elect a president, each member of that Parliament represents a roughly equal share of the population.
The ERC warned that without accompanying reforms to delimitation processes, the proposed system creates a real risk of vote dilution, unequal representation and weakened accountability.
CAB3 would extend presidential and parliamentary terms from five to seven years, prolonging President Emmerson Mnangagwa's tenure until 2030. The boundary map your vote will be cast under in that election was drawn on data that will then be eight years old, in a country that has moved significantly since.
The body that will eventually redraw those boundaries will be assembled by the same president whose party benefits from leaving them unchanged.
That is the delimitation story inside CAB3. It is not a footnote. It is the mechanism.