Spurs have as many as any other team of right wing supporters as well as any other political persuasion people have do not be under any illusion that they don't.
It depends what you mean by right-wing. I'm sure we've got as many Thatcherites as the other London clubs, but in terms of the extreme right, there's very little of that at Spurs, if any...whereas Chelsea and to a lesser extent West Ham have a sizable minority who are either extreme-right or who sympathise with those views.
Even if you leave aside the anti-semitic abuse from those club's fans....would you ever hear Spurs fans singing "Anton Ferdinand, you know what you are" if the situation was reversed and a Spurs player had racially abused him? Would you ever hear Spurs fans singing "we pay your benefits" to local black people on the way to a game like West Ham fans did when we last played them? The answer is a resounding no.
Likewise, I'd say Woolwich have very few extreme-right supporters.