We know that, peninsula is a piece of land that surrounded by water on three sides. Hence, it is what A piece of land almost surrounded by water i.e, three sides water and one side land.
One of the thing that progressive support would be: Direct election of senators.
The progressive wanted this so they could the candidate based on the person and not the party. Direct election of senators will make it easier for them to elect the person that represent their value for the position.