Is there a political faction in Russia publicly advocating for an immediate ceasefire?

Question

Analogous to the corresponding question about Ukraine:

All the official news coverage I've seen have indicated most of Russia is determined in continued fighting in Ukraine, saying things like that they will extend territorial claims and are not finished with the war.

Still, the picture might be misleading because Russia can and does suppress opposition quite heavily, not only since the introduction of the law forbidding any criticism of the official position on the war (well you could not legally call it that in Russia). This might hint at that there is a faction within Russia that's in favor of collaborating with Ukraine, and by implication in favor of an immediate ceasefire.

Is there any indication that there is a political faction in Russia (in Parliament or otherwise organized) favoring an immediate ceasefire and publicly advocating it? If not, what about the Russian population at large? As I understand it Russia has criminalized collaboration with Ukraine (which by their definition includes expression of resistance against the war or even calling it as such), hence if such a faction exists I imagine it'll either be underground or among Russian exiles.

I'm referring to Russians who think Russia should implement an immediate ceasefire and say so, but don't identify as Ukrainian (e.g. by taking up Ukrainian citizenship) and will choose to remain Russian afterwards.

Answer 1

Alexei Navalny is clearly against continuing the war (source):

It is now everyone’s duty to make at least some, even the smallest contribution to stop this war and remove Putin from power. Protest wherever and however you can. Agitate however you can and whomever you can. Inaction is the worst possible thing. And now its consequence is death.

He is the leader of the Russia of the Future party that is not officially registered.

Alexei Gorinov has been sentenced for seven years in jail for criticising Russia’s military actions in Ukraine. Wikipedia claims he belongs to Солидарность but I cannot find the official position of this faction towards the war in Ukraine. The faction is against some other wars.

Legal, active factions advocating the cease fire immediately I think are unlikely as they would be banned. Statements against the war are not allowed. Anyone seen to be spreading what the government deems "fakes" about "military action in Ukraine" can earn up to 15 years in jail.

Answer 2

At least some oligarchs have expressed such an opinion as can be seen in this Reuters article and this Guardian one.

Also the Yabloko party, which is no longer represented in the main parliamentary Duma but is still represented in some local ones, is the main political opposition to the SMO (special military operation) and tried to organize some protests. There is also an official statement by Yabloko.

Answer 3

Boris Nadezhdin, who is seeking to run for president, has expressed anti-war views. He told the BBC, among other things

"My first task will be to stop the conflict with Ukraine, and then to restore normal relations between Russia and the Western community."

Answer 4

From the electoral program of Boris Nadezhdin:

Россия должна завершить СВО и начать мирные переговоры 
 с Украиной и Западом.

that translates as:

Russia must end the Special Military Operation and start peace negotiations with Ukraine and the West.

I think this is the call for the immediate cease fire, and also proposing discounts at least somewhat beyond that V. Putin used to offer (more or less to surrender). And also

Российская Федерация — не осажденная крепость в кольце врагов. Переход от противостояния со странами Запада 
 к сотрудничеству. Восстановление отношений и выход 
 из экономической и политической изоляции.

that translates as:

The Russian Federation is not a besieged fortress surrounded by enemies. Transition from confrontation with Western countries to cooperation. Restoration of relations and exit from economic and political isolation.