Sorry, I wasn't trying to discuss auto traffic laws here.
But yes, traffic in the rotary has the right of way. This is primary.
But if you and another car approach the rotary at the same time, the one on the right has the right of way to enter the rotary first. With larger rotarys this is not very important, but on smaller rotarys (rotaries?), it can make all the difference in the world.
Edited to add:
Perhaps this is why people in NH don't know this, as NH doesn't educate people about it:
http://www.nh.gov/dot/org/projectdev...ochure2008.pdf
Perhaps I'm remembering the 'when arriving at the rotary at the same time, the driver on the right has the right of way' rule from my driver education classes from about 35 years ago, or perhaps it's from the general rule about approaching any intersection at the same time as another driver?