  We used a torsion pendulum containing $\sim 9 \times 10^{22}$ polarized
electrons to search for CP-violating interactions between the pendulum's
electrons and unpolarized matter in the laboratory's surroundings or the sun,
and to test for preferred-frame effects that would precess the electrons about
a direction fixed in inertial space. We find $|g_{\rm P}^e g_{\rm S}^N|/(\hbar
c)< 1.7 \times 10^{-36}$ and $|g_{\rm A}^e g_{\rm V}^N|/(\hbar c) < 4.8 \times
10^{-56}$ for $\lambda > 1$AU. Our preferred-frame constraints, interpreted in
the Kosteleck\'y framework, set an upper limit on the parameter $|\bm{\tilde
{b}}^e| \leq 5.0 \times 10^{-21}$ eV that should be compared to the benchmark
value $m_e^2/M_{\rm Planck}= 2 \times 10^{-17}$ eV.
