  A summary of the constraints from searches performed by the ATLAS
Collaboration for the electroweak production of charginos and neutralinos is
presented. Results from eight separate ATLAS searches are considered, each
using 140 fb$^{-1}$ of proton-proton data at a centre-of-mass energy of
$\sqrt{s}$=13 TeV collected at the Large Hadron Collider during its second
data-taking run. The results are interpreted in the context of the 19-parameter
phenomenological minimal supersymmetric standard model, where R-parity
conservation is assumed and the lightest supersymmetric particle is assumed to
be the lightest neutralino. Constraints from previous electroweak, flavour and
dark matter related measurements are also considered. The results are presented
in terms of constraints on supersymmetric particle masses and are compared with
limits from simplified models. Also shown is the impact of ATLAS searches on
parameters such as the dark matter relic density and the spin-dependent and
spin-independent scattering cross-sections targeted by direct dark matter
detection experiments. The Higgs boson and Z boson `funnel regions', where a
low-mass neutralino would not oversaturate the dark matter relic abundance, are
almost completely excluded by the considered constraints. Example spectra for
non-excluded supersymmetric models with light charginos and neutralinos are
also presented.
