Tens of thousands of anti-government protesters in Thailand are vowing to continue demonstrations on Monday against their prime minister.
Sondhi Limthongkul is one of the premier's fiercest critics
The campaigners, many of whom attended a huge rally on Sunday night, say they will keep up the protests until Prime Minister Thaksin Shinawatra steps down.
Mr Thaksin has refused to quit despite repeated rallies calling for him to go.
On Friday he called snap elections, although opposition parties are said to be considering a boycott.
The anti-Thaksin movement has gripped the Thai capital Bangkok. The latest demonstration, on Sunday, was the third rally in less than a month.
Several thousands demonstrators camped out overnight in Sanam Luang field, where the rally drew tens of thousands of people.
"Our Monday protest will have more people joining from the provinces," said Sondhi Limthongkul, the premier's fiercest public critic and a key figure of the protests.
He told the crowd still there on Monday morning: "I will never abandon you."
The crowd chanted "Thaksin Get Out!" after a statement was read aloud from the People's Alliance for Democracy, saying protests would "continue until Prime Minister Thaksin is out".
The alliance, an ad-hoc coalition of activist, labour and student groups, has led protests in recent weeks, accusing the prime minister of corruption.
In the face of this growing opposition, Mr Thaksin dissolved parliament on Friday, forcing national elections three years early.
He said the elections would give power back to the people, and he clearly expects to win again because of his Thai Rak Thai party's popularity among rural voters.
The three main opposition parties have spoken of boycotting the April elections.
In another protest, at least 2,000 poor farmer gathered at Government House for a pre-dawn rally, prompting police to seal the gates of Thaksin's administrative headquarters.
A short time later the farmers marched on the state-run Bank of Agriculture and Agricultural Cooperatives.
Bank staff told AFP news agency they had closed the bank as the farmers gathered peacefully outside.
The farmers have made clear that they are not protesting against Mr Thaksin but have not announced any demands, according to witnesses.