Democratic Party and Republican Party( you can also call it Grand Old Party )
In the United States we call them the Democratic party.
To become a member of a US political party, you can list or check your party preference when registering to vote. Alternatively, you can call the state or national political party office to be added to the membership list.
1. Government ownership of the railroads 2. An income tax that was higher for the rich than for the poor 3. A loan program that would help farmers pay off their debts 4. Political reforms such as the direct election of senators 5. A shorter workday for laborers
The person could be termed as being non-political. Or politically impartial. Or even sensible!
Non-partisan or independent.
A group that supports its beliefs and political candidates is called a political party.
Pakistan Peoples Party was the brainchild of some socialist minded people like J.A Rahim, Shaikh Rashid, Dr.Mubashir Hassan etc and it was the time when Zulfiqar Ali Bhutto decided to ditch Field Marshal Ayub (whom ZAB used to call "Daddy") and form his own political party. This socialist group came in contact with Bhutto and knowing his fire brand oratory qualities, they offered Bhutto to join this group and take up the name of Pakistan Peoples Party.