Below are lists of Sinn Fein marginal seats showing which constituencies won in the latest elections can be most easily lost.
Below is the Sinn Fein defence list consisting of Sinn Fein held marginal seats for the 2022 general election. These marginal constituencies are ordered from the smallest to the largest swing to be defeated by the largest opposition party.
|Rank||Constituency||Region||Majority||Swing to Defeat|
|2.||Fermanagh and South Tyrone||Northern Ireland||875||0.82%|
|3.||Down South||Northern Ireland||2,446||2.40%|
|4.||Newry and Armagh||Northern Ireland||12,489||11.65%|
|5.||Tyrone West||Northern Ireland||10,342||11.89%|
|6.||Ulster Mid||Northern Ireland||12,890||13.80%|
|7.||Belfast West||Northern Ireland||21,652||26.64%|