Article snippet: Potential Democratic presidential candidates are campaigning for the midterms in states that MORE took from their party’s column in 2016, testing the waters for the next presidential election. The so-called invisible campaign has begun with would-be candidates including Sens. MORE (D-Mass.), 68, checking out the political landscape while campaigning for congressional candidates. “It’s like preseason football practice: you’re not playing in pads yet but you’re on the field, leading the playbook,” said David Wade, a Democratic strategist who served as a senior aide to MORE during his presidential bid in 2004, said of the presidential hopefuls. “It’s candidate training, with a net.” A number of presidential hopefuls have been stumping in blue states that turned red during the 2016 presidential election, such as Wisconsin, Michigan and Pennsylvania. Trump was the first GOP presidential candidate to win Wisconsin since 1984, and the first to win the other two states since 1988. Harris, for example, attended a fundraiser for Sen. MORE in Wisconsin in the coming weeks. Baldwin also recently received a boost from Booker, who appeared at two events in Madison and Milwaukee. He has also been making other appearances, including in Florida, where he campaigned for Sen. MORE. Warren has had a similar schedule, campaigning in Ohio, Wisconsin and Michigan for her Senate colleagues. In addition, she did a fundraiser for Brown and also campaigned with Ohio gubernatorial candid... Link to the full article to read more