Below are lists of Reform UK marginal seats showing which constituencies won in the latest elections can be most easily lost.
Below is the Reform UK defence list consisting of Reform UK held marginal seats for the 2029 general election. These marginal constituencies are ordered from the smallest to the largest swing to be defeated by the largest opposition party.
View Reform UK target seats for the next general election.
(order by percentage majority)
| Rank | Constituency | Region | Majority | Swing to Defeat | |
|---|---|---|---|---|---|
| 1. | Basildon South and Thurrock East | East of England | 98 | 0.12% | |
| 2. | Great Yarmouth | East of England | 1,426 | 1.75% | |
| 3. | Boston and Skegness | East Midlands | 2,010 | 2.48% | |
| 4. | Ashfield | East Midlands | 5,508 | 6.91% | |
| 5. | Clacton | East of England | 8,405 | 9.14% |
View Reform UK target seats for the next general election.