Dharmadam legislative constituency in Kannur district was formed by merging the erstwhile Edakkad constituency with some parts of Thalassery constituency in 2008. It consists of Anjarakandy, Chembilode, Kadambur, Muzhappilangad and Peralasseri panchayats in Kannur taluk and Dharmadam, Pinarayi and Vengad panchayats in Thalassery taluk. There are 139 polling booths in Dharmadam legislative constituency.

2011

Five candidates contested in the first elections conducted after the formation of Dharmadam legislative constituency in 2011. K. K. Narayanan from Communist Party of India (Marxist) was the candidate from Left Democratic Front. Mambaram Divakaran – the UDF backed independent, Madhu S. Vayanan of Bahujan Samajwadi Party, C. P. Sangeetha of Bharatiya Janatha Party, Poyiloor Kunnumbrom Divakaran (Independent) were the other four candidates.
In 2011, the total number of electors was 163674 which included 73410 males and 90264 females. On an average the number of electors per polling station was 1178. About 83.31% among the total electors exercised their voting right in the 2011 elections. This accounted for about 135279 electors; 59876 males and 75403 females.

	MALES	FEMALES	TOTAL
Electors	73410	90264	163674
Voters	59876	75403	135279

K. K. Narayanan of CPI(M) won the election, bagging about 53% of the total votes polled. He defeated the UDF backed independent candidate Mambaram Divakaran by a margin of 15612 votes (about 11.54% of the total votes polled).

CANDIDATE	PARTY	VOTES	PERCENTAGE
K. K. Narayanan	CPI(M)	72354	53.1
Mambaram Divakaran	Independent (INC)	57192	42
C. P. Sangeetha	BJP	4963	3.6
Kunnumbrom Divakaran	Independent	871	0.6
S. Madhu Vayanan	BSP	797	0.6

2016

Six candidates contested in the legislative assembly elections at Dharmadam in 2016. Pinarayi Vijayan who is a politburo member of CPI(M) was the LDF candidate. Mambaram Divakaran from INC, Tharammal Niyaz of SDPI, Mohanan Manthery of BJP, and two independents – Divakaran M. Thiruvathira, Divakaran Moottil House were the other five candidates.

By 2016 the number of male electors increased by 9958 to reach 83368 and the number of female electors increased by 8634 to reach 98898. This corresponds to an increase of 13.6% and 9.6% respectively, compared to 2011. The total number of electors has reached 182266 in 2016 which is a net increase of 11.4% from 2011. Average electors per booth rose to 1311. The number of electors who have exercised their voting rights also rose by 12.5%, elevating the polling percentage to 83.5%.

	MALES	FEMALES	TOTAL
Electors	83368	98898	182266
Voters	67612	84631	152243

Pinarayi Vijayan of CPI(M) defeated the UDF candidate by a margin of 36905 votes (about 24.24% of total votes polled) in the 2016 elections to the legislative assembly. He secured about 57% of the total votes polled in the elections.

CANDIDATE	PARTY	VOTES	PERCENTAGE
Pinarayi Vijayan	CPI(M)	87329	56.8
Mambaram Divakaran	INC	50424	32.8
Mohanan Manthery	BJP	12763	8.3
Tharammal Niyaz	SDPI	1994	1.3
Divakaran M. Thiruvathira	Independent	354	0.2
Divakaran Moottil House	Independent	148	0.1

2021

8 candidates contested in the 2021 legislative assembly election at Dharmadam. They were C K Padmanabhan (BJP), Pinarayi Vijayan (CPIM), C Raghunathan (INC), Basheer Kannadiparamba (SDPOI), Chovva Raghunathan (IND), Valayar Bhagyavathi (IND), C P Maharoof (IND), Vadi Harindran (IND)

The total number of eligible electors was1,93,486 of which 89,773 were male, 1,03,711 female and 2 registered voters were of the third gender. The electorate gender ratio in Dharmadam in 2021 is 1155.

Pinarayi Vijayan won the election by a margin of 50, 123 votes.

Party		Candidate	Votes	%
	CPI (M)	Pinarayi Vijayan	95,522	59.61%
	INC	C. Raghunathan	45,399	28.33%
	BJP	C. K. Padmanabhan	14,623	9.13%
	SDPI	Basheer Kannadiparamba	2,280	1.42%
	Independent	Valayar Bhagyavathi	1,753	1.09%