ABC News’ Amy Walter and Michael Falcone report: Rep. Michele Bachmann, the leader of the House Tea Party caucus and a favorite of conservatives, is wading deeper into presidential waters this weekend with a multi-stop trip to the first-in-the-nation primary state of New Hampshire. Bachmann’s main event in the Granite State will be a Saturday speech at a fundraising brunch organized by the New Hampshire Republican State Committee. A source close to Bachmann said the Minnesota Republican “will be talking about how beating Obama starts with defunding ObamaCare and the need for a constitutional conservative to be the Republican nominee.”...