Summary: Here's everything you need to know before Wednesday's opening bell: Reports from Rome suggested new Italian elections could come as early as July. Salesforce's first-quarter earnings and outlook for the year topped analysts' forecasts. Microsoft passed Alphabet in market value at $753 billion. A Tesla sedan operating in Autopilot mode crashed into a parked police cruiser in Southern California. U.S. stock futures pointed toward a rebound from Monday's lows.
