  We consider $\mathcal{N}=4$ supersymmetric gauge theories on the squashed
three-sphere with six preserved supercharges. We first discuss how Wilson and
vortex loops preserve up to four of the supercharges and we find squashing
independence for the expectation values of these $\frac{2}{3}$-BPS loops. We
then show how the additional supersymmetries facilitate the analytic matching
of partition functions and loop operator expectation values to those in the
mirror dual theory, allowing one to lift all the results that were previously
established on the round sphere to the squashed sphere. Additionally, on the
squashed sphere with four preserved supercharges, we numerically evaluate the
partition functions of ABJM and its dual super-Yang-Mills at low ranks of the
gauge group. We find matching values of their partition functions, prompting us
to conjecture the general equality on the squashed sphere. From the numerics we
also observe the squashing dependence of the Lee-Yang zeros and of the
non-perturbative corrections to the all order large $N$ expression for the ABJM
partition function.
