Who make the decision how much polictian get pay?

Answer 1

I know the Speaker of the House makes $212,100 a year
Senators and Representatives make $165,200
Vice President $212,100
President $400,000

Congress has the power to set members' salaries, however the Twenty-Seventh Amendment prohibits a change in wages to take effect in the same two-year term that it is passed into law.

Answer 2

The politicians decide. That is why Congress continues to vote itself raises.

Answer 3

Usually the politicians. but voters have some say-so also.