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Rigathi Gachagua, President William Ruto and former President Uhuru Kenyatta.
Caption for the landscape image:

Battle of bigwigs in Ol Kalou polls

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From left: Former Deputy President Rigathi Gachagua, President William Ruto and former President Uhuru Kenyatta.

Photo credit: Nation Media Group

The July 16 Ol Kalou parliamentary by-election has evolved from a routine constituency contest into one of the country's most politically significant electoral battles ahead of the 2027 General Election.

Beyond electing a successor to the late Jubilee MP David Kiaraho, the vote has become an early referendum on the shifting balance of power in the Mt Kenya region, placing President William Ruto, and his Deputy President Kithure Kindiki on one side and former President Uhuru Kenyatta and former Deputy President Rigathi Gachagua under intense political scrutiny.

Political observers say the outcome will offer the clearest indication yet of who currently commands the region's political loyalty and who is best positioned ahead of the next presidential election.

Kamau Ngotho

Sammy Kamau Ngotho, winner of the Ol Kalou parliamentary party primaries for the Democracy for Citizens Party (DCP) at the party headquarters in Nairobi on May 12, 2026.

Photo credit: Bonface Bogita | Nation Media Group

Although nine candidates are on the ballot, analysts argue that the contest has effectively crystallised into two  competing centres of power of President Ruto's State machinery, Mr Gachagua's Democracy for the Citizens Party (DCP) and the Jubilee wing associated with former President Uhuru Kenyatta.

Each camp enters the race seeking a different political outcome, making Ol Kalou less about winning a parliamentary seat than controlling the political narrative heading into 2027.

President Ruto and Deputy President Kindiki are backing United Democratic Alliance (UDA) candidate Muchina Nyaga, while Mr Gachagua has thrown his weight behind DCP candidate Kamau Ngotho. Former President Kenyatta and Dr Matiang'i are backing Jubilee candidate Wilson Kigwa.

Muchina Nyagah

UDA's Ol-Kalou Constituency by-election candidate Muchina Nyagah speaks at the party headquarters in Nairobi on May 14, 2026.

Photo credit: Bonface Bogita | Nation Media Group

For President Ruto, the by-election represents his first major electoral test in Mt Kenya since relations between his administration and sections of the region deteriorated following Mr Gachagua's impeachment in October 2024.

The President secured nearly 87 per cent of the Mt Kenya vote in the 2022 General Election. The Ol Kalou result is therefore expected to provide the first electoral indication of whether that support remains intact or whether the political ground has shifted.

A UDA victory would allow President Ruto to argue that despite months of political turbulence, impeachment battles and sustained opposition mobilisation, Mt Kenya remains electorally within his grasp.

Defeat, however, would reinforce perceptions that the once-solid Mt Kenya support base is steadily slipping away, intensifying pressure on State House to rethink both its political strategy and the composition of its Mt Kenya leadership team ahead of 2027.

Political scientist John Okumu says whichever camp emerges victorious will immediately claim momentum in the battle for Mt Kenya.

“If the President's candidate wins, while Mr Gachagua and Mr Kenyatta emerge weakened, there will be serious questions about whether the two opposition camps can continue pursuing separate political strategies in Mt Kenya,” Mr Okumu said.

Yet even within government, the campaigns have exposed fresh political questions.

Although DP Kindiki is widely regarded as President Ruto's point man in Mt Kenya, much of the campaign coordination has instead been led by Laikipia East MP Mwangi Kiunjuri, prompting speculation over the Deputy President's political standing.

Kithure Kindiki

Deputy President Kithure Kindiki.

Photo credit: DPCS

Mr Kiunjuri dismissed suggestions that the government was under pressure.

“When we started this campaign our candidate was polling at about nine percent. Every percentage point we have gained reflects the work our teams have done on the ground. Today we are the clear favourites,” he told the Nation.

Mr Kiunjuri's growing prominence has nevertheless attracted criticism from the opposition.

Kipipiri MP Wanjiku Muhia questioned why Mr Kiunjuri had effectively become the government's chief campaign coordinator in Ol Kalou.

Wanjiku Muhia

Kipipiri MP Wanjiku Muhia speaks during the unveiling of Kamau Ngotho as DCP candidate in the Ol Kalou by-election at the party headquarters in Nairobi on May 12, 2026.

Photo credit: Bonface Bogita | Nation Media Group

"Kiunjuri has practically pitched camp here and is coordinating many of the strategies that we are determined to defeat," she said.

For Deputy President Kindiki, the stakes are arguably even higher.

Since replacing Mr Gachagua, he has sought to establish himself as President Ruto's principal political mobiliser in Mt Kenya. A poor performance by UDA would inevitably trigger questions over whether he has succeeded in consolidating support in a region that remains politically divided.

Although UDA leaders have repeatedly dismissed suggestions that his position is under threat, analysts say electoral performance and not political assurances will ultimately determine his influence within the ruling coalition.

Murang'a Senator Joe Nyutu argues that the by-election carries enormous significance for the Deputy President.

“This election is testing whether Prof Kindiki can mobilise Mt Kenya behind President Ruto. His political standing as the President's running mate depends heavily on demonstrating that he can deliver the region,” Mr Nyutu said.

UDA Chairperson Cecily Mbarire, however, dismissed suggestions that the Deputy President's position is under threat.

"Prof Kindiki's place remains secure and is not under threat under any circumstances," she said.

Political commentator Herman Manyora believes the stakes extend beyond a parliamentary seat.

“Let us not beat around the bush. President Ruto is running out of time to determine which voting bloc will anchor his re-election campaign. Every Mt Kenya leader hoping to remain politically relevant understands that Ol Kalou has become a political examination," he said.

That, he argues, explains the unprecedented deployment of Cabinet Secretaries, Principal Secretaries, elected leaders and government development projects into the constituency.

For Mr Gachagua, the by-election is the first electoral test of the political movement he has painstakingly built since his impeachment.

Kamau Ngotho

DCP's candidate in the Ol Kalou by-election Kamau Ngotho with party leader Rigathi Gachagua at the party headquarters in Nairobi on May 12, 2026.

Photo credit: Bonface Bogita | Nation Media Group

Having recast himself as the face of Mt Kenya's opposition through DCP, Mr Gachagua now faces the challenge of proving that his popularity at rallies can translate into votes.

Victory would significantly strengthen his claim as the region's dominant political figure and likely accelerate defections from UDA into DCP. Defeat, however, would hand critics ammunition to argue that his political influence has been amplified by rallies and social media rather than electoral reality.

“We are taking this seat. The government is terrified and may even attempt to postpone or cancel the election. They want to win it through hook and crook but the people of Nyandarua will speak through the ballot," Mr Gachagua said during a political meeting at his Wamunyoro home on Wednesday.

Former President Kenyatta also has significant political capital invested in the outcome.

Jubilee's Wilson Kigwa is widely viewed as the candidate representing the political partnership between Mr Kenyatta and Jubilee deputy party leader Fred Matiang'i. The by-election therefore doubles as the first practical test of Mr Kenyatta's decision to back Dr Matiang'i's presidential ambitions.

While the former President continues to enjoy considerable goodwill across sections of Mt Kenya, analysts say it remains unclear whether that influence can still determine electoral outcomes without former Prime Minister Raila Odinga on the ballot.

Uhuru Kenyatta

Jubilee Party leader Uhuru Kenyatta (left) with his deputy Fred Matiang'i during the party's delegates meeting at Kiambu Golf Club in Kiambu County on May 25, 2026.

Photo credit: Evans Habil | Nation Media Group

A strong Jubilee performance would suggest that Mr Kenyatta remains capable of transferring political capital to Dr Matiang'i. A poor showing, however, would raise questions over whether Mr Kenyatta's endorsement alone can reposition Jubilee as a competitive political force in the region.

Another emerging factor is Murang'a Governor Irungu Kang'ata, whose Linda Mwananchi movement is expected to campaign in Ol Kalou days before the election.

Although the movement has not publicly declared which candidate it supports, analysts believe Dr Kang'ata's entry reflects a broader attempt by younger Mt Kenya politicians to establish themselves independently of both Mr Gachagua and Mr Kenyatta.

Some observers also point to Kiharu MP Ndindi Nyoro as another emerging figure whose long-term political ambitions could eventually reshape Mt Kenya politics.

The by-election has equally become a performance appraisal for President Ruto's Mt Kenya lieutenants.

Kirinyaga Governor Anne Waiguru, former Gatundu South MP Moses Kuria, Laikipia East MP Mwangi Kiunjuri and several Cabinet Secretaries have invested considerable political capital in the campaign through rallies, project launches and voter mobilisation.

Political observers argue that should UDA lose despite such a massive deployment, questions will inevitably arise over the effectiveness of the President's regional political team and whether a reshuffle of political responsibilities becomes necessary ahead of 2027.

Several UDA politicians are also quietly watching the outcome to determine whether remaining in the ruling party remains politically advantageous.

Conversely, a convincing DCP victory could trigger a fresh wave of defections by leaders anxious to avoid finding themselves on the wrong side of an increasingly shifting political tide.

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