By-Elections (PRK): Statistics

Last updated: 18 Jul 2026

Seat-level stats (voter turnout, rejected votes, etc) for every by-election from 1957-present.

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276 rows × 15 cols

date	election	state	seat	voters_total	ballots_issued	ballots_not_returned	votes_rejected	votes_valid	majority	n_candidates	voter_turnout	majority_perc	votes_rejected_perc	ballots_not_returned_perc
24 Jan 2026	BY-ELECTION	Sabah	N.58 Lamag	13,515	9,024	7	160	8,857	5,681	2	66.8	64.1	1.8	0.1
24 Jan 2026	BY-ELECTION	Sabah	P.187 Kinabatangan	48,282	26,827	22	369	26,436	14,214	3	55.6	53.8	1.4	0.1
26 Apr 2025	BY-ELECTION	Perak	N.48 Ayer Kuning	31,897	18,523	4	289	18,230	5,006	3	58.1	27.5	1.6	0.0
28 Sept 2024	BY-ELECTION	Johor	N.29 Mahkota	66,318	35,705	24	339	35,342	20,648	2	53.8	58.4	1.0	0.1
17 Aug 2024	BY-ELECTION	Kelantan	N.43 Nenggiri	20,259	14,968	3	135	14,830	3,352	2	73.9	22.6	0.9	0.0
06 Jul 2024	BY-ELECTION	Pulau Pinang	N.20 Sungai Bakap	39,279	24,923	4	208	24,711	4,267	2	63.5	17.3	0.8	0.0
11 May 2024	BY-ELECTION	Selangor	N.06 Kuala Kubu Baharu	40,226	24,734	0	263	24,471	3,869	4	61.5	15.8	1.1	0.0
02 Dec 2023	BY-ELECTION	Terengganu	P.040 Kemaman	141,790	93,239	35	428	92,776	37,220	2	65.8	40.1	0.5	0.0
04 Nov 2023	BY-ELECTION	Sarawak	N.67 Jepak	22,804	11,077	2	152	10,923	8,784	3	48.6	80.4	1.4	0.0
07 Oct 2023	BY-ELECTION	Pahang	N.36 Pelangai	16,456	11,868	2	120	11,746	2,949	3	72.1	25.1	1.0	0.0
09 Sept 2023	BY-ELECTION	Johor	N.13 Simpang Jeram	40,379	24,571	12	74	24,485	3,514	3	60.9	14.4	0.3	0.0
09 Sept 2023	BY-ELECTION	Johor	P.161 Pulai	166,653	78,882	66	363	78,453	18,641	3	47.3	23.8	0.5	0.1
12 Aug 2023	BY-ELECTION	Terengganu	P.036 Kuala Terengganu	123,397	90,632	111	1,049	89,472	47,266	2	73.4	52.8	1.2	0.1
19 Nov 2022	BY-ELECTION	Sabah	N.66 Bugaya	32,761	18,376	126	482	17,768	6,629	7	56.1	37.3	2.6	0.7
29 Aug 2020	BY-ELECTION	Perak	N.58 Slim	23,094	15,796	18	327	15,451	10,945	3	68.4	70.8	2.1	0.1
04 Jul 2020	BY-ELECTION	Pahang	N.23 Chini	20,990	15,506	36	239	15,231	12,650	3	73.9	83.1	1.5	0.2
18 Jan 2020	BY-ELECTION	Sabah	P.176 Kimanis	29,664	23,708	5	320	23,383	2,029	2	79.9	8.7	1.4	0.0
16 Nov 2019	BY-ELECTION	Johor	P.165 Tanjung Piai	52,986	39,440	30	595	38,815	15,086	6	74.4	38.9	1.5	0.1
11 May 2019	BY-ELECTION	Sabah	P.186 Sandakan	40,131	21,847	18	234	21,595	11,521	5	54.4	53.4	1.1	0.1
13 Apr 2019	BY-ELECTION	Negeri Sembilan	N.27 Rantau	20,926	16,596	4	146	16,446	4,510	4	79.3	27.4	0.9	0.0
02 Mar 2019	BY-ELECTION	Selangor	N.24 Semenyih	54,503	39,918	50	650	39,218	1,914	4	73.2	4.9	1.6	0.1
26 Jan 2019	BY-ELECTION	Pahang	P.078 Cameron Highlands	32,009	22,019	23	568	21,428	3,238	4	68.8	15.1	2.6	0.1
13 Oct 2018	BY-ELECTION	Negeri Sembilan	P.132 Port Dickson	75,317	44,136	49	598	43,489	23,560	7	58.6	54.2	1.4	0.1
08 Sept 2018	BY-ELECTION	Selangor	N.27 Balakong	62,219	26,734	24	227	26,483	18,533	2	43.0	70.0	0.8	0.1
08 Sept 2018	BY-ELECTION	Selangor	N.32 Seri Setia	53,492	23,615	28	164	23,423	4,027	2	44.1	17.2	0.7	0.1
04 Aug 2018	BY-ELECTION	Selangor	N.49 Sungai Kandis	51,230	25,303	21	173	25,109	5,842	3	49.4	23.3	0.7	0.1
18 Feb 2017	BY-ELECTION	Sarawak	N.03 Tanjong Datu	9,959	6,892	1	80	6,811	6,443	3	69.2	94.6	1.2	0.0
18 Jun 2016	BY-ELECTION	Perak	P.067 Kuala Kangsar	32,949	23,523	10	239	23,274	6,969	4	71.4	29.9	1.0	0.0
18 Jun 2016	BY-ELECTION	Selangor	P.093 Sungai Besar	42,655	31,721	31	379	31,311	9,191	3	74.4	29.4	1.2	0.1
07 May 2015	BY-ELECTION	Pulau Pinang	P.044 Permatang Pauh	71,890	53,145	43	843	52,259	8,841	4	73.9	16.9	1.6	0.1

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Programmatic Access

import pandas as pd

URL = "https://lake.electiondata.my/results_headline/headline_stats_byelections.parquet"

df = pd.read_parquet(URL)
print(df.shape)   # (276, 15)
print(df.dtypes)
df

Cite

Users wishing to reference this dataset in an academic context should cite Thevananthan (2025), which documents the construction of the dataset as well as the data itself.

APA

Thevananthan, T. (2025). The Malaysian Election Corpus (MECo): Federal and State-Level Election Results from 1955 to 2025. Scientific Data.

Harvard

Thevananthan, T. 2025, The Malaysian Election Corpus (MECo): Federal and State-Level Election Results from 1955 to 2025. Scientific Data.

MLA

Thevananthan, Thevesh. "The Malaysian Election Corpus (MECo): Federal and State-Level Election Results from 1955 to 2025." Scientific Data (2025).

Chicago

Thevananthan, Thevesh. "The Malaysian Election Corpus (MECo): Federal and State-Level Election Results from 1955 to 2025." Scientific Data (2025).

BibTeX

@article{thevananthan2025malaysian,
  author  = {Thevananthan, Thevesh},
  title   = {The Malaysian Election Corpus (MECo): Federal and State-Level Election Results from 1955 to 2025},
  journal = {Scientific Data},
  year    = {2025}
}