An election may be timed to suit the ambitions of a ruling party, and there may be inconvenient polling hours. In agricultural countries, the season during sowing or harvest is an unsuitable time for elections; in industrialized countries, holiday periods are unsuitable. At other times of the year, insufficient polling time may be allowed after a working day. Ruling parties may choose an unsuitable election time if they think it will be to their advantage, or they may choose a time when national problems are temporarily abated.