Serbian Progressive Party (SNS) deputy leader Aleksandar Vucic called Saturday at the party's rally in Belgrade on Serbian President Boris Tadic to react to the SNS leader's decision to start a hunger strike in an effort to force the government to schedule early elections.

Tadic "has a few more hours to react, as that is how long SNS leader Tomislav Nikolic can go on without water," Vucic said.

From a podium in front of the Serbian parliament, where SNS and its coalition partners are holding a rally, Vucic said that the SNS leader has not been drinking water for six hours and will continue his strike until early parliamentary elections are scheduled.

Nikolic is also on the stage.

"Boris Tadic, your time is running out, do not play with the people, do not play with Serbia. You have a few more hours at most, that is how long Tomislav can make it. You need to act as soon as possible," Vucic said interrupted by loud applause, as well as whistles at the mention of the Serbian president's name.

The protesters were addressed by many speakers who again called for early elections.

Among the speakers were New Serbia leader Velimir Ilic, Strength of Serbia Movement leader Milanka Karic, Movement of Socialists leader Aleksandar Vulin, Roma Party leader Srdjan Saijn, and professor at the Belgrade Faculty of Law Oliver Antic.

The rally also includes musical performances, and the protesters were given sandwiches, water bottles and umbrellas with the slogan "it will topple."

Numerous Serbian and foreign reporters are still in front of the parliament.