Please. This has nothing to do with conscience and everything to do with vanity, celebrity, self-congratulation and pious sentimentality. When George Washington was a schoolboy, he entered into his commonplace book, "Labour to keep alive in your breast that that little spark of celestial fire -- conscience." These days, "conscience" is the roaring bonfire of political discourse, but there's nothing divine about it.
When "conscience" became a valuable commodity, I suppose it isn't surprising that the political marketplace produced more of it or that producers came up with a "conscience" product that has more to do with political placement than actual moral values. Is this a political Gresham's Law?