  We study the 3d effective theory of the high T Abelian Higgs model with N
real scalars and gauge and scalar couplings denoted g and $\lambda$,
respectively. We find for the three cases a) $6g^2/\lambda =0(1)$, b)
$6g^2/\lambda=0(N)$ and c) $6g^2/\lambda=O(N^{2\over3})$ the following results:
a) The O(N)+O(1) potential admits only a second order phase transition, b) The
O(1) potential admits a first order transition and c) the O(N^{1\over3}) +O(1)
result gives a first order transition whose strength diminshes with N.
