  Let (f_\lambda) be a holomorphic family of rational mappings of degree d on
the Riemann sphere, with k marked critical points c_1,..., c_k, parameterized
by a complex manifold \Lambda. To this data is associated a closed positive
current T_1\wedge ... \wedge T_k of bidegree (k,k) on \Lambda, aiming to
describe the simultaneous bifurcations of the marked critical points. In this
note we show that the support of this current is accumulated by parameters at
which c_1,..., c_k eventually fall on repelling cycles. Together with results
of Buff, Epstein and Gauthier, this leads to a complete characterization of
Supp(T_1\wedge ... \wedge T_k).
