The Governor in Indian Polity is the constitutional head of a state, appointed by the President of India on the advice of the Prime Minister. Here are a few points that explain the role and impact of a Governor in India's Polity:

• The Governor represents the central government in the state and is responsible for maintaining law and order.
• The Governor appoints the Chief Minister and other council of ministers in consultation with the Chief Minister.
• The Governor convenes and prorogues sessions of the state legislature and addresses it at the beginning of each session.
• The Governor can summon, prorogue or dissolve the state legislature and recommend the imposition of President's rule if there is a breakdown of constitutional machinery in the state.
• The Governor plays an important role in the appointment of judges, public servants, and members of various commissions and committees in the state government.
• The Governor has the power to grant pardons, reprieves, and remissions of punishments to convicted persons.

The impact of the Governor's role in Indian Polity is significant as they act as a link between the state and the central government and ensure the smooth functioning of the state's administration. However, the role of the Governor has been a subject of debate as it brings in the aspect of political affiliation and interference with the state's working when the Governor acts on the directions of the central government.