Allies of cancer-stricken President Hugo Chavez on Saturday chose to keep the same National Assembly president — a man who could be in line to step in as a caretaker leader in some circumstances.

The vote to retain Diosdado Cabello as legislative leader signalled the ruling party's desire to stress unity and continuity amid growing signs the government plans to postpone Chavez's inauguration for a new term while he fights a severe respiratory infection nearly a month after cancer surgery in Cuba.

The opposition and some legal experts have argued that if Chavez is unable to be sworn in as scheduled on Thursday, the president of the National Assembly should take over on an interim basis.

Venezuelan Vice-President Nicolas Maduro holds a miniature copy of Venezuela's constitution as he gives an interview on state television in Caracas on Friday. (Miraflores Presidential Office/Associated Press)

Cabello's selection quashed speculation about possible political reshuffling in the midst of Chavez's health crisis, and it came as Vice-President Nicolas Maduro joined other allies in suggesting that Chavez could remain president and take the oath of office before the Supreme Court later on if he isn't fit to be sworn in on the scheduled date.

"It strikes me that the government has decided to put things on hold, to wait and see what happens with Chavez's health and other political factors, and figure out the best way to insure continuity," said Michael Shifter, president of the Inter-American Dialogue think-tank in Washington.

"Maduro and Cabello are clearly the key players within Chavismo today, each heading separate factions, but for the time being the idea is to reaffirm both and project a sense of unity."

Cabello, a former military officer who is widely considered to wield influence in the military, was re-elected by a show of hands by Chavez's allies, who hold a majority of the 165 congressional seats.

Pro-Chavez party leaders ignored calls to include opposition lawmakers among the legislative leadership, and opposition lawmaker Ismael Garcia said the choices represented "intolerance." None of the opposition lawmakers supported the new legislative leaders.

Hundreds of Chavez's supporters gathered outside the National Assembly to show their support.

Date not mentioned in constitution

The Venezuelan Constitution says the presidential oath should be taken Jan. 10 before the National Assembly. It also says that if the president is unable to be sworn in before the Assembly, he may take the oath before the Supreme Court, and some legal experts in addition to Chavez allies have noted that the sentence referring to the court does not mention a date.

"When, it doesn't say. Where, it doesn't say either," Cabello told supporters after the session. Apparently alluding to possible protests by opponents over the issue of delaying the inauguration, Cabello told supporters: "The people have to be alert on the street so that there is no show."

Without giving details, Cabello urged them to "defend the revolution."

Maduro argued that Chavez, as a re-elected president, remains in his post after Jan. 10 regardless of whether he has taken the oath of office on that date. "When he can, he will be sworn in," Maduro said.

'When he can, he will be sworn in.'

—Nicolas Maduro, Venezuelan vice president

The latest remarks by the two most powerful men in Chavez's party sent the strongest signals yet that the government wants to delay the 58-year-old president's inauguration.

Former Supreme Court magistrate Roman Duque Corredor disagreed with Maduro, saying that "the constitution doesn't allow an extension" of a presidential term.

"An extension of a term can't be discussed," Duque said told The Associated Press a phone interview.

"What would be right is to definitively determine what the president's state of health is." He said the Supreme Court should designate a board of doctors to determine whether Chavez's condition prevents him from continuing to exercise his duties temporarily or permanently.

If Chavez dies or is declared incapacitated, the constitution says that a new election should be called and held within 30 days, and Chavez has said Maduro should be the candidate. There have been no public signs of friction between the vice-president and Cabello, who appeared side-by-side waving to supporters after the session and vowed to remain united.

"Come here, Nicolas. You're my brother, friend. They don't understand that," Cabello said, hugging Maduro before the crowd. Referring to government opponents, he said: "They're terrified of that, unity."

But opposition lawmaker Julio Borges said the government's choices of legislative leaders pointed to an arrangement aimed at containing an internal "rupture."

Borges told reporters that he believes there is a behind-the-scenes "fight" in the president's party to avoid Cabello assuming powers temporarily if Chavez is unable to be sworn in on schedule. The lawmaker asserted that there are serious tensions between those who support a "model that's kidnapped from Havana" and a military-aligned wing in Chavez's movement.

Cabello sought to cut off such speculation, saying: "We will never betray the will of the Venezuelan people. We will never betray the orders and instructions of Commander Chavez."

'We will never betray the orders and instructions of Commander Chavez'—Diosdado Cabello, Venezuelan National Assembly President

The National Assembly president also dismissed the possibility of dialogue with Chavez's opponents, saying: "There is no conciliation possible with that perverse right."

Both Maduro and Cabello have reasons for presenting a united front, political analyst Vladimir Villegas said.

"They have the responsibility to keep Chavismo united because the division of Chavismo would be the ruin of both of them. For that reason, they're going to do everything possible to stay united," Villegas said.

If the government delays the swearing-in and Chavez's condition improves, the president and his allies could have more time to plan an orderly transition and prepare for a new presidential election.

Chavez was re-elected in October to another six-year term, and two months later announced that his pelvic cancer had returned. Chavez said before the operation that if his illness prevented him from remaining president, Maduro should be his party's candidate to replace him in a new election.

Chavez hasn't spoken publicly or been seen since before his Dec. 11 operation, his fourth cancer-related surgery since June 2011 for an undisclosed type of pelvic cancer. The government revealed this week that Chavez is fighting a severe lung infection and receiving treatment for "respiratory deficiency."

That account raised the possibility that he might be breathing with the assistance of a machine. But the government did not address that question or details of the president's treatment, and independent medical experts consulted by the AP said the statements indicated a potentially dangerous turn in Chavez's condition, but said it's unclear whether he is attached to a ventilator.