  In view of the imminent start of the LHC experimental programme, we use the
available indirect experimental and cosmological information to estimate the
likely range of parameters of the constrained minimal supersymmetric extension
of the Standard Model (CMSSM), using a Markov-chain Monte Carlo (MCMC)
technique to sample the parameter space. The 95% confidence-level area in the
(m_0, m_1/2) plane of the CMSSM lies largely within the region that could be
explored with 1/fb of integrated luminosity at 14 TeV, and much of the 68%
confidence-level area lies within the region that could be explored with 50/pb
of integrated luminosity at 10 TeV. A same-sign dilepton signal could well be
visible in most of the 68% confidence-level area with 1/fb of integrated
luminosity at 14 TeV. We discuss the sensitivities of the preferred ranges to
variations in the most relevant indirect experimental and cosmological
constraints and also to deviations from the universality of the
supersymmetry-breaking contributions to the masses of the Higgs bosons.
