The political battle between President William Ruto and former deputy president Rigathi Gachagua is increasingly becoming a contest for control of Mount Kenya, one of Kenya’s most important voting blocs, with the outcome likely to influence alliances, turnout and the shape of the 2027 presidential race.
Gachagua, who now leads the Democracy for Citizens Party (DCP), has been campaigning to consolidate the Mount Kenya vote while accusing Ruto of trying to weaken the region’s political unity. Ruto, meanwhile, has been seeking to maintain links with leaders and voters in the region that helped deliver his 2022 victory.
The contest is still more than a year from the election, and political alliances in Kenya can change rapidly. But the struggle over Mount Kenya is already providing clues about how the 2027 campaign could develop.
The 2022 election offers a useful starting point. Ruto and Gachagua won 7.08 million votes nationally, or 50.3%, against Raila Odinga’s 6.81 million, according to published election results. Ruto performed strongly across much of Mount Kenya, including 73% in Kiambu, 81.2% in Murang’a and 81% in Meru.
That political geography could look very different in 2027.
1. Mount Kenya could become a battleground
For years, Kenya’s presidential elections have been heavily influenced by regional voting blocs. Mount Kenya is particularly important because of its large voter population and its ability to deliver substantial margins to a presidential candidate.
In 2022, Ruto benefited from overwhelming support in several Mount Kenya counties. Kiambu alone had more than 1.27 million registered voters, while Nakuru had more than 1 million. Murang’a had more than 620,000 registered voters.
Gachagua is now attempting to convert that regional support into a political base of his own.
Recent appearances in Embu, Nyeri and Kirinyaga have highlighted his effort to present himself as a defender of Mount Kenya interests. He has also argued that the region should remain politically united rather than divide its vote among several parties.
For Ruto, the challenge is that the political relationship that helped him win Mount Kenya in 2022 has changed.
Gachagua is no longer campaigning alongside him. He is building an alternative political vehicle and directly challenging the president’s influence in the region.
If Gachagua succeeds in securing a large share of the Mount Kenya vote, Ruto could face a significant reduction in one of the voting blocs that helped give him his winning margin in 2022.
2. Ruto needs to rebuild trust
Ruto’s biggest challenge in Mount Kenya may not simply be winning political leaders. It will be convincing ordinary voters that supporting his administration remains in their interests.
The president has continued to receive support from some Mount Kenya politicians. Kirinyaga Governor Anne Waiguru, for example, has defended working with the national government, arguing that cooperation can help the county secure development resources.
But Gachagua has used such alliances as evidence of an attempt to divide the region.
That creates a difficult political calculation for Ruto.
The president must balance national coalition-building with the need to preserve his support in a region where Gachagua is presenting himself as the alternative political centre.
Ruto also has an advantage that opposition politicians do not have: incumbency. Government projects, national appointments and access to political networks provide the president with tools for maintaining influence.
But incumbency can also become a liability if voters judge the administration on the economy, employment, taxation and the cost of living.
The 2027 election will therefore be shaped not only by ethnic or regional loyalties, but by how voters assess the government’s performance.
3. Gachagua has strengths, but also limits
Gachagua’s greatest political strength is his direct connection to the Mount Kenya political conversation.
As Ruto’s running mate in 2022, he was instrumental in consolidating support for the Kenya Kwanza ticket in the region.
He now has the opportunity to turn that experience into an independent political movement.
His recent strategy has also sought to broaden the definition of the Mount Kenya bloc beyond its traditional boundaries. Gachagua has spoken about Mount Kenya East and other communities that he believes can form part of a wider political coalition.
That could help him overcome one of his biggest weaknesses: the perception that his political influence is concentrated mainly in Central Kenya.
Recent reporting has highlighted efforts by Gachagua to expand his national profile and move beyond the image of being primarily a Mount Kenya politician.
The challenge is turning regional popularity into a national presidential coalition.
Kenyan presidential elections are won nationally. A candidate who dominates one region but fails to build support in other parts of the country can struggle to reach the constitutional threshold required to win.
Gachagua therefore needs more than a strong Mount Kenya vote. He needs allies, governors, MPs and voters outside the region.
4. Nakuru, Kiambu and Meru will matter
The battle will not be limited to the traditional Central Kenya counties.
Kiambu, Nakuru and Meru are particularly important because of their large voter populations and strategic position in national coalition politics.
In 2022, Ruto won 606,085 votes in Kiambu, representing 73% of the presidential vote there. He also won 455,686 votes in Nakuru, or 65.9%, and 369,360 votes in Meru, or 80.8%.
A significant shift in any of these counties could change the national arithmetic.
Nakuru is especially important because it sits at the intersection of different political and ethnic constituencies. It can serve as a bridge between Mount Kenya and Rift Valley politics.
Meru also has strategic importance because of its position in the wider Mount Kenya East political network.
The outcome in these counties could tell a broader story about whether voters are following regional political leaders, national party structures or their own economic interests.
5. Young voters could disrupt the old political formula
Perhaps the biggest uncertainty facing both Ruto and Gachagua is the younger electorate.
Kenya’s electoral politics is entering a period in which millions of younger citizens are becoming eligible to vote. The Independent Electoral and Boundaries Commission has set a target of registering 6.3 million new voters ahead of the 2027 election, with specific efforts aimed at young people and other groups that have historically faced registration barriers.
This could alter traditional political calculations.
Young voters are likely to focus heavily on employment, business opportunities, education, housing, taxation, digital jobs and the cost of living.
That does not mean ethnic and regional politics will disappear. It does mean candidates may have to combine regional mobilisation with a credible economic message.
For Ruto, this presents both an opportunity and a risk. His administration can campaign on government programmes and infrastructure while also being held responsible for economic pressures.
For Gachagua, the challenge is similar. Opposition to Ruto may not be enough to persuade young voters unless it is accompanied by clear proposals on jobs, entrepreneurship and household incomes.
What could decide the 2027 race?
The Mount Kenya contest is therefore bigger than a personal rivalry between Ruto and Gachagua.
It could determine how presidential coalitions are constructed across Kenya.
If Gachagua consolidates Mount Kenya while building alliances in other regions, Ruto could be forced to search for a new electoral coalition.
If Ruto retains a substantial share of the Mount Kenya vote, Gachagua’s national ambitions could face a major test.
A third possibility is that the region fragments, with different political parties and personalities dividing the vote. That would make the national contest even more competitive because neither side could rely on a single regional bloc delivering an overwhelming margin.
The political battle is already producing signs of that fragmentation. Gachagua’s DCP has positioned itself as the main political vehicle for the region, while other parties and politicians are also seeking influence. Gachagua’s allies have accused Ruto of using emerging parties to split Mount Kenya’s vote, an allegation the president’s supporters reject.
Ultimately, the 2027 election may be decided by what happens outside Mount Kenya as much as inside it.
Kenya’s presidential system rewards candidates who can build broad national coalitions. A strong regional base is valuable, but it must be combined with support in the Rift Valley, Western Kenya, Nairobi, Coast, Eastern Kenya and other parts of the country.
For voters, the question may be less about whether Ruto or Gachagua can claim Mount Kenya and more about what each can offer Kenya as a whole.
The political battle is still evolving. But with the 2027 election approaching, the struggle for Mount Kenya has already become one of the clearest indicators of how Kenya’s next presidential contest could unfold.
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