Complex sentence: Dave Leip's Atlas of U.S. Presidential Elections is a website created by electrical engineer David Leip (born 1970) from Massachusetts as a hobby after the 1992 Presidential Election, while Leip was attending graduate school at MIT.
Split into simpler sentences: Dave Leip's Atlas of U.S. Presidential Elections is a website created by electrical engineer David Leip (born 1970) from Massachusetts. Leip began the Atlas of U.S. Presidential Elections as a hobby after the 1992 presidential election, while Leip was attending graduate school at MIT.