which source was used before may 2010?
Radio Nacional de Venezuela
Poll company Source Publication date PSUV Opposition Undecided
GIS XXI Radio Nacional de Venezuela March 2010 32 22 36
GIS XXI Radio Nacional de Venezuela May 2010 36 23 33
GIS XXI Radio Nacional de Venezuela June 2010 44 20 -
Hinterlaces Hinterlaces El Universal July 2010 27 28 23
GIS XXI Correo del Orinoco August 2010 50 44 N/A
IVAD El Universal August 2010 45 43 N/A
Keller & Asociados El Universal August 2010 32 46 N/A
Keller & Asociados El Universal 2 September 2010 43 57 0
Datanálisis ABC.es September 2010 52 48 N/A
Hinterlaces Unión Radio Descifrado September 2010 41 37 N/A
IVAD Unión Radio Descifrado September 2010 54 46 N/A
csv/204-csv/639.tsv