Canadian federal elections have provided the following results in Eastern Ontario.

This article does not cite any sources. (December 2009)

Seats obtained by party
since 1979

Liberal   Conservative   Alliance (defunct)   Progressive Conservative (defunct)

This mostly rural region has historically split between the Conservatives and Liberals, though vote-splitting led to a Liberal sweep in 1993 and 1997. The merge of the former Canadian Alliance and Progressive Conservative parties, however, saw the region swing rightward in the new millennium. Conservative parties gradually increased their seat numbers from 2004 onward, and by 2006 only the University City and largest urban area seat of Kingston and the Islands remained in Liberal hands.

In the 2011 election, the region was affected by the nationwide surge in support for the NDP. Although the NDP failed to win any seats in the area, they increased their popular vote share in all seven of the region's ridings, and won second place in three of the area's ridings.

The Liberal wave that swept through Ontario in 2015 saw the Liberals take four seats in eastern Ontario, mostly in more urbanized areas (Kingston, Belleville, Hawkesbury). The Conservatives won the other four.

The 2019 election saw the Conservatives regain Hastings—Lennox and Addington, with the other seats remaining unchanged, resulting in the Conservatives winning five seats to the Liberals three.

Votes by party throughout time

More information Election, Liberal ...

Election	Liberal	Conservative	New Democratic	Green	People's	PC	Reform / Alliance	Others
1979	128,691 39.2%	—	49,161 15.0%	—	—	149,774 45.6%	—	785 0.2%
1980	138,038 44.1%	—	47,772 15.3%	—	—	125,705 40.2%	—	890 0.3%
1984	123,295 35.4%	—	46,852 13.4%	826 0.2%	—	175,060 50.2%	—	2,635 0.8%
1988	180,011 46.3%	—	54,825 14.1%	—	—	136,666 35.2%	—	8,433 2.2%
1993	242,072 57.3%	—	13,860 3.3%	871 0.2%	—	79,597 18.8%	65,421 15.5%	20,508 4.9%
1997	191,132 48.6%	—	25,181 6.4%	2,884 0.7%	—	88,879 22.6%	81,845 20.8%	3,225 0.8%
2000	173,608 45.8%	—	17,164 4.5%	4,855 1.3%	—	60,770 16.0%	119,464 31.5%	2,112 0.6%
2004	139,558 38.3%	156,649 43.0%	45,666 12.5%	18,243 5.0%	—	—	—	2,749 0.8%
2006	123,177 31.6%	183,758 47.2%	58,419 15.0%	19,322 5.0%	—	—	—	3,330 0.9%
2008	94,954 26.5%	183,114 51.2%	47,897 13.4%	27,801 7.8%	—	—	—	3,255 0.9%
2011	84,611 22.3%	199,170 52.4%	72,036 18.9%	13,574 3.6%	—	—	—	10,609 2.8%
2015	202,326 43.9%	186,378 40.4%	51,641 11.2%	13,239 2.9%	—	—	—	7,772 1.7%
2019	162,540 33.7%	200,345 41.6%	72,806 15.1%	32,449 6.7%	10,193 2.1%	—	—	3,009 0.6%
2021	155,014 32.1%	207,061 42.9%	78,859 16.3%	11,483 2.4%	28,562 5.9%	—	—	1,525 0.3%

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Liberal   Conservative   New Democratic   Green   People's

Progressive Conservative (defunct)   Alliance (defunct)   Reform (defunct)