Alathur is one of the 20 Lok Sabha (parliamentary) constituencies in Kerala state in southern India.This constituency came into existence in 2008, following the implementation of delimitation of parliamentary constituencies based on the recommendations of the Delimitation Commission of India constituted in 2002.

Alathur Lok Sabha constituency comprises the following seven legislative assembly segments:

Constituency number	Name	District	Member	Party		2024 Lead
57	Tarur (SC)	Palakkad	P. P. Sumod		CPI(M)		CPI(M)
58	Chittur		K. Krishnankutty		JD(S)		INC
59	Nenmara		K. Babu		CPI(M)		INC
60	Alathur		K. D. Prasenan		CPI(M)		CPI(M)
61	Chelakkara (SC)	Thrissur	Vacant				CPI(M)
62	Kunnamkulam		A. C. Moideen		CPI(M)		CPI(M)
65	Wadakkanchery		Xavier Chittilappilly		CPI(M)		INC

Chelakkara, Wadakkancherry and Kunnamkulam segments were earlier in the erstwhile Ottapalam Lok Sabha constituency.

Election	Lok Sabha	Member	Party
2009	15th	P. K. Biju		CPI(M)
2014	16th
2019	17th	Ramya Haridas		INC
2024	18th	K Radhakrishnan		CPI(M)

2024 Indian general election: Alathur

Party		Candidate	Votes	%	±%
	CPI(M)	K. Radhakrishnan	403,447	40.66	3.86
	INC	Ramya Haridas	3,83,336	38.63	13.77
	BJP	T N Sarassu	1,88,230	18.97	10.97
	NOTA	None of the above	12,033	1.21	0.45
Majority			20,111	2.03	13.56
Turnout			9,92,268	74.19	6.28
	CPI(M) gain from INC		Swing

No.	Constituency	Winner	Party	Votes	Runner Up	Party	Votes	Margin
57	Tarur	K. Radhakrishnan	CPI(M)	52,082	Ramya Haridas	INC	46,890	5,192
58	Chittur	K. Radhakrishnan	CPI(M)	55,372	Ramya Haridas	INC	56,844	-1,472
59	Nenmara	K. Radhakrishnan	CPI(M)	55,451	Ramya Haridas	INC	56,768	-1,317
60	Alathur	K. Radhakrishnan	CPI(M)	55,692	Ramya Haridas	INC	46,894	8,798
61	Chelakkara	K. Radhakrishnan	CPI(M)	60,368	Ramya Haridas	INC	55,195	5,173
62	Kunnamkulam	K. Radhakrishnan	CPI(M)	58,549	Ramya Haridas	INC	54,722	3,827
63	Wadakkanchery	K. Radhakrishnan	CPI(M)	61,304	Ramya Haridas	INC	61,918	-614

2019 Indian general election : Alathur

Party		Candidate	Votes	%	±%
	INC	Ramya Haridas	533,815	52.4	12.07
	CPI(M)	P K Biju	3,74,847	36.8	7.54
	BDJS	T.V. Babu	89,837	8.82	1.65
	BSP	Dr. Jayan.C.Kuthannur	5505	0.54	00.54
	Independent	Krishnankutty Kunissery	2716	0.27	N/A
	Independent	Pratheep Kumar P.K	4301	0.42	N/A
	NOTA	None of the above	7722	0.76	01.55
Margin of victory			1,58,968	15.59
Turnout			10,19,376	80.47
	INC gain from CPI(M)		Swing

No.	Constituency	Winner	Party	Votes	Runner Up	Party	Votes	Margin
57	Tarur	Ramya Haridas	INC	72,441	P.K. Biju	CPI (M)	47,602	24,839
58	Chittur	Ramya Haridas	INC	79,423	P.K. Biju	CPI (M)	55,956	23,467
59	Nenmara	Ramya Haridas	INC	82,539	P.K. Biju	CPI (M)	52,318	30,221
60	Alathur	Ramya Haridas	INC	73,120	P.K. Biju	CPI (M)	50,407	22,713
61	Chelakkara	Ramya Haridas	INC	76,034	P.K. Biju	CPI (M)	52,339	23,695
62	Kunnamkulam	Ramya Haridas	INC	69,908	P.K. Biju	CPI (M)	55,586	14,322
63	Wadakkanchery	Ramya Haridas	INC	79,028	P.K. Biju	CPI (M)	59,488	19,540

2014 Indian general election : Alathur

Party		Candidate	Votes	%	±%
	CPI(M)	P.K. Biju	411,808	44.34	2.41
	INC	Sheeba	3,74,496	40.33	4.31
	BJP	Shaju Mon Vattekad	87,803	9.45	2.93
	NOTA	None of the above	21,417	2.31
Margin of victory			37,312	4.02	1.49
Turnout			9,27,228	76.42
	CPI(M) hold		Swing

2009 Indian general election : Alathur

Party		Candidate	Votes	%	±%
	CPI(M)	P K Biju	387,352	46.84
	INC	N K Sudheer	3,66,392	44.31
	BJP	M Bindu	53,890	6.52
Margin of victory			20,960	2.53
Turnout			8,26,891	74.98
	CPI(M) win (new seat)

• Palakkad district
• Thrissur district
• Ottapalam (Lok Sabha constituency)
• Indian general election, 2014 (Kerala)

• Alathur Lok Sabha Elections Asianet News survey results 2019

10°36′N 76°30′E / 10.6°N 76.5°E / 10.6; 76.5