Matt Gertken, chief strategist for global and U.S. political strategy at BCA Research, says investors should be factoring in geopolitics and the upcoming U.S. election now, because current uncertainty could cause a downturn "soon, at any time." But once the election is sorted out, whoever wins — and no matter the policies they pursue — is facing the inevitabilities of the economic cycle. Gertken is clear that he doesn't see the kind of economic imbalances that would cause a market cataclysm akin to the Great Financial Crisis of 2008, but troubles in China over politics there — plus deflation and a troubled housing market — could drag the U.S. and other international economies into a bigger tailspin. Todd Rosenbluth, head of research at VettaFi, looks to the infrastructure space with his ETF of the Week, and Indrani De, global head of investment research for FTSE Russell discusses the upcoming Russell Reconstitution — the exercise of changing benchmark indexes to avoid surprises — and what the current effort (which becomes final on Friday) reveals about the stock market and the breadth of growth now.