  For Y a subset of the complex plane,a beta ensemble is a sequence of
probability measures on Y^n for n=1,2,3...depending on a real-valued continuous
function Q and a real positive parameter beta.We consider the associated
sequence of probability measures on Y where the probability of a subset W is
given by the probability that at least one coordinate of Y^n belongs to W. With
appropriate restrictions on Y,Q we prove a large deviation principle for this
sequence of measures. This extends a result of Borot-Guionnet to subsets of the
complex plane and to beta ensembles defined with measures using a
Bernstein-Markov condition.
