  In light of WMAP results, we examine the observational constraint on the
P-term inflation. With the tunable parameter $f$, P-term inflation contains
richer physics than D-term and F-term inflationary models. We find the
logarithmic derivative spectral index with $n>1$ on large scales and $n<1$ on
small scales in agreement to observation. We obtained a reasonable range for
the choice of the gauge coupling constant $g$ in order to meet the requirements
of WMAP observation and the expected number of the e-foldings. Although tuning
$f$ and $g$ we can have larger values for the logarithmic derivative of the
spectral index, it is not possible to satisfy all observational requirements
for both, the spectral index and its logarithmic derivative at the same time.
