Freshman Rep. Adam Gray is challenging 10 Republicans to show up at his office. But the moderate Blue Dog from California isn’t luring Republicans to bark at them. It’s so he can convince them that there’s power to be had in a House with a razor-thin margin and to work together on subjects like water issues crucial to his Central Valley district. “Imagine if 10 Republicans and 10 Democrats could get together in a Congress where there’s a margin of three or four votes and say, ‘You know what? We’re gonna sit down, and we’re gonna craft bipartisan solutions to some of these big topics,’” Gray said.