and in order to win a primary, usually the person, on the democratic or republican side, whoever takes the most extreme position wins the primary. the extremists are the most energised voters to turn out, and part of the problem of polarisation i think is forcing people who normally would make good candidates for office stay out of the electoral process altogether, because they do not want to be a part of what is going on. so i think polarisation, in the sense that it exists today, at least in the us and some other countries, is very dangerous for democracy. i am not in favour of that at all. if trump wins the republican nomination, would you work for him? no. why not? first of all, i have no desire to work in american politics, and i also do not know that... i learned this from arthur finkelstein. electing a president