tories in the LS... do they out themselves or stay quiet

so me and the missus been in the london scene about 3 yrs now and we've def clocked a few couples we suspect lean heavy tory but never say a word in club. like the husband let slip once about his "city job" and his views on tax and i was like ok mate sit down lol. do u think most lifestyle couples just keep politics out of it on purpose or do they actively hide where they sit... cos i feel like the second u know how someone votes the whole vibe shifts even if the play was great the night before...