Could be part of it - something similar gets called the ‘Shy Tory’ effect in Britain - people being less likely to tell pollsters they are voting conservative.
As I wrote.
A poll said 80 percent of Brits felt intimidated to say their opinion in this election.
God save our gracious Queen!
Long live our noble Queen!
God save the Queen!
Send her victorious,
Happy and glorious,
Long to reign over us,
God save the Queen.
Thy choicest gifts in store
On her be pleased to pour,
Long may she reign.
May she defend our laws,
And ever give us cause,
To sing with heart and voice,
God save the Queen!