  Parity-violating (PV) interactions among quarks in the nucleon induce a PV
$\gamma NN$ coupling, or anapole moment (AM). We compute electroweak
gauge-independent contributions to the AM through ${\cal O}(1/\lamchis)$ in
chiral perturbation theory. We estimate short-distance PV effects using
resonance saturation. The AM contributions to PV electron-proton scattering
slightly enhance the axial vector radiative corrections, R_A^p, over the scale
implied by the Standard Model when weak quark-quark interactions are neglected.
We estimate the theoretical uncertainty associated with the AM contributions to
R_A^p to be large, and discuss the implications for the interpretation PV of ep
scattering.
