Abstract
In this paper we analyze the simple case of voting over two alternatives with variable electorate. Our main findings are (a) the axiom of continuity is redundant in the axiomatization of scoring rules in Young (1975), SIAM J. Appl. Math. 28: 824-838, (b) the smaller set of axioms characterize the scoring rules when indifferences are allowed in voter's preferences, (c) a version of May's theorem can be derived from this last result and finally, (d) in each of these results, the axioms of neutrality and cancellation can be used interchangeably.