Ali Buge was the only Mongol emperor in Mongolian history to receive the support of almost all Mongol nobles, but did not receive the position of Great Khan.
It is not an exaggeration to say that Ali Buge won the support of almost all the Mongol nobles.
Let's first take a look at who supports Ali's succession?
(Ali Bu Brother in film and television)
After Kublai Khan preemptively succeeded to the throne, Ali Bu Brother held a kuritai assembly to elect the Great Khan. In this case, in addition to Kublai Khan, the Mongol royal family and nobles still came.
Genghis Khan had four sons (Shuchi, Chagatai, Wokoutai, and Tuolei) and a younger brother Timug. These most important family members have come. The Shuchi family came from his grandson Kuri Lost and Hessima (although the Khan of the Golden Horde at that time did not come, mainly because he was confronting Hulagu, his coins bore the name of Ali Bu Brother, proving that he supported Ali Bu Ge). The Chagatai family came from Ulu Kuna, the widow of his son Hatshu Lie (who had been the Khan of the Chagatai Khanate), and Chagatai's grandson Aruku. The Wokoutai family came from Erchi and Haidu, the grandsons of Wokoutai (because the Wokoutai family was dismembered and withered away by Meng Ge, so it can be regarded as an important member of the Wokoutai family. Later, Haidu also raised troops to fight Kublai Khan and revitalized the Wokoutai family.) The eldest son of the four sons of the Tuolei family, Möngke Khan, died, and Yulong Dagui, who was supposed to inherit the Khan's throne, also actively supported Ali Bu brother. The third son, Hulagu, was actually originally also supportive of Ali Bu Brother, and his son Yao mu Ku'er, who remained in Mobei, expressed his support for Ali Bu Brother (his son was obviously instructed by Hulagu to express his position in this way. Later, however, Kublai Khan fought hard for Hulagu and promised Hulagu that hulagu had a high degree of autonomy in the lands laid by Hulagu in the western region, so Hulagu turned back to support Kublai Khan.
In addition, among the collateral kings, two sons of Genghis Khan's younger brother Timug, Tachar and Belegutai, were present.
(Civil War on the Throne)
It can be seen that ali's support rate is unprecedentedly high.
So, why do you support Ali Bu Brother? There are several reasons for this.
First, Brother Ali was responsible for overseeing the country at home after Möngke, Kublai Khan, Hulegu, Berego, Tacha'er, Belegutai and others went out to fight. Although Möngke Khan did not establish the heir to the Khanate throne, but let Ali not supervise the country, in fact, implies that Ali will not be the "crown prince".
Second, Ali Bu Brother was the younger son of Tuolei's concubine, the younger brother of Möngke Khan. According to the Mongol tradition of "young son ShouZao" (or "younger brother ShouZao"), Ali Bu Brother should naturally inherit the position of Great Khan.
Third, although Meng Ge had a son, the eldest son, Ban Bald, was a bit embarrassed, and the second son, Yulong, and other sons were relatively small and not suitable for succession. In addition, Möngke did not have a will to let his sons succeed to the throne, so even if they were elected, no one elected them.
(Kublai Khan)
Fourth, Ali Buge was a Mongol nobleman who resolutely rejected Sinicization. When Möngke sent Kublai Khan through the southern part of the desert, Kublai Khan's Sinicization was strongly dissatisfied by the nobles of northern Mongolia, who repeatedly suggested that Möngke punish Kublai Khan. Therefore, later Möngke dealt with Kublai Khan's Han advisers by checking Kublai Khan's property accounts (that is, "hook examination"), in order to keep Kublai Khan away from Han intellectuals. But in the end it didn't work out. Because Ali Buge opposed Sinicization, he received strong support from the Mongol nobles in northern Mobei.
For the above four reasons, Ali Bu brother was finally justifiably promoted to the Great Khan at the Kuritai Conference.
However, Kublai Khan, who was strong and strong, completely abandoned this set of rules, did not recognize it at all, and raised an army to attack Ali Bu brother. Although Ali Buge had the support of the clan kings, the strength of these clan kings was very limited, especially the lack of military strength. So in the end, Kublai Khan defeated Ali Bu Brother and forcibly took the position of Great Khan.
However, although Kublai Khan defeated Ali Bu brother and gained the Khanate throne, he also lost control of the Mongol kings. The mighty Mongol Empire officially disintegrated.
(Reference: History of the Dosan Mongols)