Do UK shares perform better under a Labour or Tory Government?

FTSE all-share performance by Government, 1983-present

Table with 5 columns and 16 rows.
Second Thatcher governmentConservative1,462153%
38%
Third Blair governmentLabour78237%
18%
Second Major governmentConservative1,84874%
15%
First Major governmentConservative49920%
14%
First May governmentConservative33913%
14%
First Blair governmentLabour1,49835%
8%
Cameron–Clegg coalitionCoalition1,82339%
8%
Sunak governmentConservative4989%
7%
First Johnson governmentConservative1462%
5%
Second May governmentConservative7730%
0%
Third Thatcher governmentConservative1,266−4%
−1%
Second Johnson governmentConservative995−4%
−2%
Second Blair governmentLabour1,428−15%
−4%
Second Cameron governmentConservative431−5%
−5%
Brown governmentLabour1,048−18%
−6%
Truss governmentConservative49−4%
−31%