LDPE/P4VP films synthesized by in situ sorption and thermal polymerization of 4-vinylpyridine, (4VP), were used for conductivity investigations. The conductivities of swollen films varied from 7x10(-6) to 1.21x10(-3) S.cm(-1) at room temperature depending on P4VP mass increase in the host matrix. For the temperature range of 303-333K the conductivity varied from 7x10(-6) to 2.66x10(-3) S.cm(-1). A comparison between Arrhenius and VTF plots for conductivity measurements showed a best fit for temperature dependence according Arrhenius modified equation. The materials are stable for temperatures below 645 K.