Precipitation in the tundra totals 150 to 250 mm a year, including melted snow. That's less than most of the world's greatest deserts! Still, the tundra is usually a wet place because the low temperatures cause evaporation of water to be slow.
In this period, Brazil came back to the two party political system. With the return of democracy, in 1986, and the establishment of the 1988 Constitution, the multiparty political system was set back and several parties were founded.
As stressed above, Brazil has a multiparty political system, with full freedom affiliation. We live in what some social science analysts call of Coalition Democracy, where no party can gain power alone, they have to create alliances in order to stand for the elections and govern.