The Algerian opposition parties will boycott on Tuesday a parliament meeting aimed at confirming an interim replacement for Abdelaziz Bouteflika, who resigned last week after facing massive protests. The constitution stipulates that the speaker of the upper house of parliament -- currently 77-year-old Abdelkader Bensalah -- take the presidential reins for the next 90 days. But with protesters demanding an overhaul of the political system, the interim leaders identity may not be a foregone conclusion. The opposition has voiced its rejection of Bensalah assuming the interim presidency. The Islamic Movement of Society for Peace announced in a statement Monday that it would boycott the parliament meeting because it opposes Bensalah and sees his appointment as contrary to the will of the popular protests. On Friday -- in the first weekly protest since Bouteflika announced his departure after losing the militarys support -- Algerians demanded regime stalwarts be excluded from the political transition. Three men in particular have drawn ire: Bensalah, head of the constitutional council Tayeb Belaiz and prime minister Noureddine Bedoui. Protesters views appear to have registered with the regime. An editorial in pro-government daily El Moudjahid on Sunday suggested Bensalah be relieved of his duties as upper house speaker, so as to preclude him from becoming interim president. It suggested finding a "consensus" candidate acceptable to both the state and the people. But the regime mouthpiece did not come up with any names. Army chief General Ahmed Gaid Salah insists Bouteflikas succession must adhere strictly to the constitutional framework. But the protesters "want it done outside the constitution", said Rashid Grim, who teaches political science at the Higher Institute of Management and Planning in Algiers. The protest movement is calling for a new transitional framework that is committed to deep reforms and organizing free elections. In the increasingly probable event of Bensalahs withdrawal, his successor as upper house speaker would be in line to become interim president. But Bensalah and "all other upper house members will be rejected by the streets", Grim told AFP. And if the speakership of the upper house is left vacant, the constitution stipulates the similarly unpalatable Belaiz becomes interim president. "This is where there is a real problem," Grim said. "If the army doesnt soften its position, we head towards a breakdown and difficulty in controlling the streets", he warned.