  Global fit studies performed in the pMSSM and the photon excess signal
originating from the Galactic Center seem to suggest compressed electroweak
supersymmetric spectra with a $\sim$100 GeV bino-like dark matter particle. We
find that these scenarios are not probed by traditional electroweak
supersymmetry searches at the LHC. We propose to extend the ATLAS and CMS
electroweak supersymmetry searches with an improved strategy for bino-like dark
matter, focusing on chargino plus next-to-lightest neutralino production, with
a subsequent decay into a tri-lepton final state. We explore the sensitivity
for pMSSM scenarios with $\Delta m = m_{\rm NLSP} - m_{\rm LSP} \sim (5 - 50)$
GeV in the $\sqrt{s} = 14$ TeV run of the LHC. Counterintuitively, we find that
the requirement of low missing transverse energy increases the sensitivity
compared to the current ATLAS and CMS searches. With 300 fb$^{-1}$ of data we
expect the LHC experiments to be able to discover these supersymmetric spectra
with mass gaps down to $\Delta m \sim 9$ GeV for DM masses between 40 and 140
GeV. We stress the importance of a dedicated search strategy that targets
precisely these favored pMSSM spectra.
