  We discuss the low-temperature behavior of the electronic self-energy in the
vicinity of a ferromagnetic instability in two dimensions within the
two-particle self-consistent approximation, functional renormalization group
and Ward-identity approaches. Although the long-range magnetic order is absent
at T>0, the self-energy has a non-Fermi liquid form at low energies w<\Delta_0
near the Fermi level, where Delta_0 is the ground-state spin splitting. The
spectral function at temperatures T<Delta_0 has a two-peak structure with
finite spectral weight at the Fermi level. The simultaneous inclusion of
self-energy and vertex corrections shows that the above results remain
qualitatively unchanged down to very low temperatures T<<Delta_0. It is argued,
that this form of the spectral functions implies the quasi-splitting of the
Fermi surface in the paramagnetic phase in the presence of strong ferromagnetic
fluctuations.
