A new guest column by UMBC political science professor Thomas F. Schaller on Sabato’s Crystal Ball ask the highly provocative question, “How Should We Vote?” Schaller writes: Given pervasive gerrymandering and a shrinking number of competitive districts, any serious reform of congressional elections might also entail changes to our voting rules — that is, how votes are cast by voters and aggregated to determine winners… So what sort of voting rule reforms might significantly alter the composition of Congress, encourage greater voter participation and create a more responsive national legislature? Changing voting rules can change voter behavior in two important …