The crisis dates back to the ousting of Thaksin Shinawatra, Yingluck's elder brother, who was first elected in 2001 and forced out by a military coup in 2006. Since then, three more Governments led by allies of Thaksin have been elected and then forced out by the controversial Constitutional Court, established by the coup regime in 2007.
The PDRC's leaders appear to have given up on electoral politics. They insist there is no point taking part in further polls until there are reforms because they believe the process is rigged.
What makes the situation more hopeless is the main opposition group, the Democrat Party also appears to have given up on democracy. Under the leadership of Abhisit Vejjajiva it has been allying itself with the PDRC and boycotted an election Yingluck called in February.
Meanwhile, Thaksin, 64, also unelected and unaccountable, continues to pull the strings of both the Red Shirt movements and the Pheu Thai Party from exile in Dubai. He knows if an election goes ahead, his side will almost certainly win.
- Independent