English to Bulgarian Other Government / Politics

A single-issue party is a political party that campaigns on only one issue. Such a party is rarely successful in gaining elected office. It is generally believed that single-issue parties are favored by voluntary voting systems, as they tend to attract very committed supporters who will always vote.

Чета обяснението на английски, смисълът ми е ясен, но не намирам думи да го преведа на български. Политическият ми речник е изключително беден. Някой да се е сблъсквал с термина?