Which members of a party will definitely be invited to a national convention because they are instrumental in turning out party voters in the general election?

Many potential challengers to incumbents do not run due to the daunting amount of money it takes to run a congressional campaign

Indicate whether the statement is true or false

Which of the following is LEAST likely to be a source of normative political knowledge?

A. the United States Constitution B. the Gallup Poll C. the writings of Karl Marx D. the platform of the German Green Party