HUMBOLDT, Tenn. (AP) - Democratic state Senator Don McLeary of Humboldt switched parties this afternoon to the Republicans. The change will give Republicans an edge of 18-to-15 in the Senate. McLeary said it was a hard decision, but his heart tells him it's the right one. McLeary is the only person to file for candidacy in the his district, which covers Madison, Gibson and Carroll counties. He said it's not titles that are important, but actions.