Polls have opened in Spain after the four main parties failed to break the political deadlock from December's inconclusive general election. 
Opinion polls have suggested that Sunday's election may still not overcome the stalemate. 
The conservative Popular Party (PP) is tipped to win, but to fall short of a parliamentary majority, according to the (BBC). 
Polls indicate the left-wing Unidos Podemos alliance is edging ahead of the Socialists (PSOE) for second place. 
The two could potentially form a broad left-wing coalition. 
The centre-right, pro-business party Ciudadanos (Citizens) is forecast to take fourth place. 
December's election was a watershed for Spain, because the PP and the PSOE had previously alternated in power since the restoration of democracy in the 1970s.

Source ; QNA