LANSING, Mich (WLMI) A new poll shows that President Obama has retaken the lead in Michigan over expected Republican nominee Mitt Romney.  Lansing-based EPIC-MRA released a poll yesterday showing Obama with a 48-percent to 42-percent lead over the Michigan native.  The results are part of a recent trend of polls showing Obama opening a lead over Romney.  The survey was conducted July 24th-through-July 31st and has a margin of error of four-percentage points.