A (Democratic) Republic.
Leaders are elected without regard to their religious or spiritual beliefs. That is by the constitution, however, voters do choose the reasons to support a candidate, and those reasons can include religion.
republic
representative democracy
in a general election
It is a democracy.
republic
voters participate in elections to choose their representatives in government
A parliamentary democracy.
A democracy - a democratic government of publicly elected representatives.
In the United States, the executive branch, led by the President, plays a significant role in selecting government leaders. The President appoints individuals to key positions within the federal government, including cabinet members and heads of agencies. However, legislative approval is often required for certain appointments, as the Senate must confirm many of the President's selections. Ultimately, voters also choose leaders at various levels through elections, influencing who occupies executive roles.
Well they are a type of government so they have to gain the power themselves.
The President of the United States is the chief of the executive branch, congress and voters are the leaders of the legislative branch, and each judge in the supreme court on the Judicial branch of government are appointed by congress and voters like you.