No the DEP is only run seasonally. It goes dark after Labor Day and won't return until peak Christmas time (Dec. 18th).
Never been to WDW, but I can tell you that the DEP was revamped earlier this year and was reintroduced with Tinkerbell replacing the Blue Fairy as the lead float and Pinocchio float making a return.
I don't think SpectroMagic ever came to DLR??? Not in my recollection anyway.
No, no switching between Spectro and the ELP. I did hear a rumor that the ELP would go over to Disneyland from DCA but that appears to be a rumor only that never came about.
That rumor is still very much going strong. Al Lutz over at MA says that the DEP is coming back to Main Street USA in 2010 as part of the 55th Anniversary celebration.
Does anyone know if the ELP will be running in March?
The parade is properly called the Electrical Parade - not Electric Light Parade nor ELP. When it was at DL for many years it was known as Main Street Electrical Parade or MSEP. When it started at DCA it was redubbed Disney's Electrical Parade or DEP. 
Does anyone know if the ELP will be running in March?




Spectro in WDW and have fond memories of DEP back in 1999 - just don't remember it as well as I wasn't in to my manic Disney phase yet
. I was so looking forward to seeing it again, esp if it is better than spectro as spectro brings tears to my eyes just hearing the music, let alone seeing the floats.

... Trivia for all y'all EP lovers: the parade music is based on Perrey-Kingsley's 1966 composition Baroque Hoedown. ...
