The price (trump) is too high. Where will the US be after him if he wins?

That said, i vote idealistic too. But I live in a country with a multiple party system. The government is formed by creating a coalition of parties (a certain percentage of voters must be attained). Even the smaller parties get representatives in the government, according to their size, and they can wheigh on the policy that way. Got to be pragmatic in politics though : they look for compromises on certain topics to form a coalition. Voting is in itself already a compromise : no party or person has the same views as you on all points.