date (s) released    polling institute      nationalist           labour democratic alternative undecided / no answer lead
0    7 january 2012     the sunday times  25.2% (46.9%) ¤  29.5% (52.1%) ¤          1.0% (1.0%) ¤                 44.3%   4%
1       8 july 2012  misco international              22%              32%                     1%                   45%  10%
2   14 october 2012  misco international              22%              34%                     1%                   43%  12%
3   13 january 2013     the sunday times      27% (44%) ¤      33% (54%) ¤              1% (1%) ¤                   38%   6%
4      3 march 2013          malta today            28.2%            40.2%                   2.4%                 29.2%  12%

Table as JSON:
{"date (s) released":{"0":"7 january 2012","1":"8 july 2012","2":"14 october 2012","3":"13 january 2013","4":"3 march 2013"},"polling institute":{"0":"the sunday times","1":"misco international","2":"misco international","3":"the sunday times","4":"malta today"},"nationalist":{"0":"25.2% (46.9%) ¤","1":"22%","2":"22%","3":"27% (44%) ¤","4":"28.2%"},"labour":{"0":"29.5% (52.1%) ¤","1":"32%","2":"34%","3":"33% (54%) ¤","4":"40.2%"},"democratic alternative":{"0":"1.0% (1.0%) ¤","1":"1%","2":"1%","3":"1% (1%) ¤","4":"2.4%"},"undecided \/ no answer":{"0":"44.3%","1":"45%","2":"43%","3":"38%","4":"29.2%"},"lead":{"0":"4%","1":"10%","2":"12%","3":"6%","4":"12%"}}