And of course, that episode shows that there are pro Vulcan activists on Romulus. Whilst it would be very lazy, even negligent, of the Romulan leaders to assume pro Romulan support on Vulcan, it is not that surprising when you consider the arrogance with which they are normally portrayed.
"Sir, can we be sure the Vulcans will support us?"
"Of course. They are a logical people. It is inevitable they will see the benefits of our way of life."