2022 County Spotlight: Nakuru — The Rift Valley Battleground

Nakuru is the Rift Valley’s battleground. With 1,055,515 registered voters in 2022, it is Kenya’s third-largest county electorate — behind only Nairobi and Kiambu. William Ruto won it with 455,864 votes (66.44%), but Raila Odinga still pulled a significant 226,052 votes (32.94%). This is not a one-sided county. It is a county where both candidates had serious support and where the margins could shift in future elections.

With 5,503 rejected ballots and a turnout of just 65.53%, Nakuru also shows how much is left on the table even in a county this large.

The 2022 Presidential Result in Nakuru

Here is how Nakuru voted on August 9, 2022:

• William Ruto (UDA): 455,864 votes (66.44%)
• Raila Odinga (Azimio): 226,052 votes (32.94%)
• George Wajackoyah (Roots): 2,435 votes (0.35%)
• David Mwaure (Agano): 1,819 votes (0.27%)
• Total valid votes: 686,170
• Rejected ballots: 5,503
• Registered voters: 1,055,515
• Turnout: 65.53%

Ruto’s margin was 229,812 votes. That is a comfortable win but not a blowout. Nakuru’s 33% Odinga vote is significantly higher than neighbouring Rift Valley counties like Kericho (4.50% Odinga) or Nandi (8.47% Odinga). Nakuru is cosmopolitan, with large Kikuyu, Kalenjin, Luo, and Luhya populations, and the vote reflects that diversity.

How Nakuru Shifted from 2017 to 2022

The 2017-to-2022 transition in Nakuru tells a dramatic story of political realignment:

• 2017: Kenyatta 639,297 (84.74%), Odinga 110,857 (14.70%)
• 2022: Ruto 455,864 (66.44%), Odinga 226,052 (32.94%)

The headline: Odinga more than doubled his vote, from 110,857 to 226,052 (+115,195 votes). Meanwhile, the Jubilee/UDA vote dropped from 639,297 to 455,864 (−183,433 votes). Ruto’s share fell 18.3 percentage points from Kenyatta’s 2017 mark.

What drove the shift? Two factors stand out. First, Nakuru’s large Kikuyu population, which overwhelmingly backed Kenyatta in 2017, split in 2022. Some followed the Mt. Kenya establishment toward Ruto; others were drawn to Odinga through Martha Karua’s vice-presidential candidacy. Second, lower turnout disproportionately affected the Jubilee base — Nakuru went from 754,405 total valid votes in 2017 to just 686,170 in 2022, a drop of 68,235 votes.

This data comes from the IEBC’s official presidential results, which provide county-level breakdowns for both elections.

Constituency Breakdown

Nakuru has 11 constituencies, and the political map is sharply divided by demographics. The county stretches from the Mau Escarpment to the shores of Lake Nakuru, encompassing agricultural highlands, urban centres, and pastoral lowlands.

Ruto’s strongest areas were the predominantly Kalenjin constituencies of Kuresoi South, Kuresoi North, and Molo — where he exceeded 80%. Odinga performed best in Naivasha and Nakuru Town East, where Kikuyu and minority populations created more competitive dynamics, though Ruto still won both.

The constituency data reveals that Nakuru is essentially two counties in one: a solidly Ruto Rift Valley periphery and a more competitive urban/peri-urban core. This split has profound implications for ground operations. A campaign that treats Nakuru as uniformly pro-Ruto will miss the 226,052 Odinga voters concentrated in specific areas.

The 5,503 Rejected Ballots

Nakuru’s 5,503 rejected ballots ranked among the top five nationally. That is 0.80% of all ballots cast — slightly below the national average of 0.80%. While the rejection rate is not unusual, the absolute number is significant because of Nakuru’s size.

For perspective: 5,503 rejected ballots is more than the total valid votes Ruto received in Homa Bay (3,497). It is more than the entire electorate of some rural wards. In a county where the margin was 229,812, rejected ballots are not decisive. But in a tighter future race, they could be.

The Daily Nation’s 2022 election coverage highlighted Nakuru as one of several large counties where voter education initiatives struggled to keep pace with population growth.

Nakuru in the Rift Valley Context

Nakuru is the most competitive county in the Rift Valley. Compare it with its neighbours:

• Kericho: Ruto 95.32% — virtually no opposition
• Baringo: Ruto 80.69% — strong but not total
• Narok: Odinga 51.71% — Odinga actually won
• Nakuru: Ruto 66.44% — solid but with real opposition
• Laikipia: Ruto 70.46% — similar profile to Nakuru

Nakuru sits at the crossroads of the Rift Valley and Central Kenya. Its demographics — Kalenjin in the west, Kikuyu in the east, and a mix of communities in Nakuru Town — make it a bellwether for broader national trends.

What Nakuru Tells Us About 2027

1. Cosmopolitan counties are contestable. Ruto won Nakuru by 33 points, but Odinga more than doubled his vote from 2017. No cosmopolitan county’s margins are permanent.
2. Turnout determines the size of the margin. Nakuru lost 68,235 votes between 2017 and 2022. The party that mobilises those missing voters gains a significant advantage.
3. Constituency-level data is essential. Nakuru’s 11 constituencies have wildly different political profiles. A winning strategy in Kuresoi South is useless in Nakuru Town East.

For the full legal framework governing elections in multi-ethnic counties, the Kenya Law Reports provide comprehensive documentation of electoral laws and petition precedents.

Nakuru’s 1,055,515 voters are spread across 1,806 polling stations. On election night, knowing which constituency is reporting and which is lagging can change your entire strategy. Votrack’s real-time parallel tallying gives you that intelligence. Request a demo and turn Nakuru’s complexity into your advantage.