Although the court of the Mughal emperor was always full of conspiracies and new conspiracies were made against Jai Singh, but even then Jai Singh held an important place in Mughal politics, so he had a special influence on the Rajput princely states. Jai Singh confined his political activities from the Sambhar Lake to the banks of the Yamuna to Agra and Mathura and to the south on the banks of the Narmada. This entire region was either ruled by him, or he was a subedari or the states under his influence were situated like a colony of Jaipur state.
The link between the emperor and the Rajput kings
The rulers of Rajput princely states like Jodhpur, Bundi, Kota and Mewar used to send letters to the emperor through Jai Singh. The emperor also sent replies to these letters to the Rajput kings through Jai Singh. The orders of the emperor were that without the recommendation of Jai Singh, no decision would be taken regarding the Rajput states.
Good relations with the Jats of Bharatpur
Chudaman and Mohkam Singh had dominated Delhi, Agra and Jaipur, but when Jai Singh established the state of Bharatpur with his own hands, his relations with the Jats became sweet for life. Badan Singh continued to consider himself a vassal of Jai Singh throughout his life. After becoming the king, Badan Singh used to visit Raja Jai Singh every year in his capital where he was welcomed like kings. The place where he stayed came to be called Badanpura. When Peshwa Bajirao came to Jaipur in 1736 AD, a grand court was organized in Jaipur in honor of Peshwa. Prince Surajmal of the princely state of Bharatpur was sent to this court. During this, Surajmal was introduced to Peshwa Bajirao.
Matrimonial Relations with Rajput States
Although matrimonial relations did not have a definite effect on political relations during that period, these relations sometimes played a major role in political events. Jai Singh was first married to the daughter of Udit Singh, the nephew of Gaur Raja Uttam Ram of Sheopur. The second marriage was with Chandra Kunwari, the daughter of Maharana of Mewar, and the third was with Suraj Kunwari, the daughter of Ajit Singh. Raja Dalelsingh of Bundi and Raja Abhay Singh of Jodhpur were the sons of Sawai Jai Singh.
right over Rampura Jagir
Jai Singh acquired the jagir of Rampura from the Maharana of Mewar in the name of Prince Madho Singh, born from the womb of his Udaipur queen, on the condition that Ram Singh would remain as a vassal of the Maharana of Mewar throughout his life. The Maharana of Mewar accepted this proposal of Jai Singh. Jai Singh's men snatched Rampura from Sangram Singh, the vassal of Rampura. When Madho Singh became the king of Jaipur, he annexed Rampura in his kingdom.