Why is the party in power more cohesive that the opposition party?

In order to remain in power, they must remain cohesive--if they fragment, and a bill fails to pass, this can trigger a vote of confidence and thus a dissolution of the parliament. The opposition party, on the other hand, has no such restrictions.

I'm not 100% sure this will help but...I'm trying. :)

i'll write a docs for you. hold on for a moment

the correct option is: a liberal.

the kind of person that is most likely to hold a left-wing political ideology is liberal because they have in common that they support human individual rights and liberties. also, they both have politically and economically centrist.

moreover, a liberal believes that everyone should have equal rights as well as opportunities to succeed in life, and the freedom to make their own decisions as long as they don't attack the rights of other people. all people deserve the same opportunities and basic needs.