Hamas wins the election in Israel

After Hamas won the election in Israel, the question arises - is that a valid expression of democracy, or is the ability of an anti-democratic party to run in an election the antithesis of democracy itself? I believe that voting is in fact an expression of democracy, and not the definition of democracy. I do not think that the architects of the Palestinian Authority democracy (namely the US, EU and Israel) should of allowed a recognized terrorist and totalitarian organization run in a democratic election. It is counter intuitive and undermines the democracy that the architects are trying to create. I believe that the US and Israel may have allowed it to happen, to prove that the Palestinians are ALL terrorists.