That’s pretty interesting.
But; there was a cabal or collection of some sort within the Russian monarchy who wanted Rasputin dead and gone due to his near-complete influence over Alexandra, no? And they were supposedly the ones who poisoned him. That was a completely separate assassination attempt as I understand it.
Not being entirely clear on the dates involved; didn’t Rasp recover from his poisoning and then, sometime later, perhaps months and years, he was shot as you say, and dumped into the River Nieve?
You’re right that there were many in the Russian Duma who rightly wanted Rasputin out of the picture - Purishkevich, one of the two publicly identified “assassins” of Rasputin (the other was Prince Yusupov, who owned the mansion on the Moika where Rasputin was offed), had shouted “He’s killing Russia” in the Duma which, given his hold over the simpletons Nicholas and Alexandra, was absolutely correct. But both Yusupov and P-kevich repeatedly changed their stories of Rasputin’s murder (Y-pov did it materially 19 times), none of which ever made a lot of sense. Moreover, the bit about Rasputin dying of drowning after having been shot and fed poisoned cakes by his hosts was probably a subterfuge to cover the real details - Rasputin had been shot three times (twice with the British SIS bullets) and his body had been tossed into the frozen Moika Canal adjacent to the mansion and it is apparently very common for submerged dead bodies to absorb water into the lungs.