  We made global fits of the inert Higgs doublet model (IDM) in the light of
collider and dark matter search limits and the requirement for a strongly
first-order electroweak phase transition (EWPT). These show that there are
still IDM parameter spaces compatible with the observational constraints
considered. In particular, the data and theoretical requirements imposed favour
the hypothesis for the existence of a scalar dark matter candidate around 100
GeV. This is mostly due to the pull towards lower masses by the EWPT
constraint. The impact of electroweak precision measurements, the dark matter
direct detection limits, and the condition for obtaining a strongly enough
first-order EWPT, all have strong dependence, sometimes in opposing directions,
on the mass splittings between the IDM scalars.
