Interesting - We see our job as a voter very differently. Representing me is only one of many jobs those guys have. They also will represent many other folks, too. Like you, I can't find anyone on a ballot that represents me completely. So I look for who they will be able to represent effectively. And that information is embedded in their platforms, policies, and past votes. Those guys may represent some folks I don't care for, and they may neglect to represent other folks that I absolutely care for. So I balance that.
And my voting is only one piece of my job as a citizen. Another is to stay actively engaged with people in and out of the political system, who can make things happen about the issues and people I care about. Politics is ugly and nasty because it's about control of power to make things happen -- we see that in tiny ways even about the direction and progress of Steemit. But it's less ugly and less nasty than making things happen by fascism, feudalism, or war - whether local, international, or anything in-between.