The 2009 CMT Music Awards — honoring the best in country music video-making — have been pushed up a day, from Wednesday, June 17, to Tuesday, June 16. Reps for the network won’t directly confirm that the addition of Keith Urban and Sugarland to the roster of performers had anything to do with the date change, but it’s a safe bet: both acts have a tour date scheduled in South Carolina on the 17th.CMT has also added Def Leppard to the bill — one can only hope they’ll reprise their Crossroads appearance with the unavoidable Taylor Swift, which was literally the least objectionable thing she did last year — alongside Toby Keith, Brad Paisley, and Rascal Flatts. More performers are expected to sign on as the date gets closer.Meanwhile, fan voting is now open for the awards themselves, with Sugarland’s six nominations leading the pack. Anyone out there planning to participate? Who’s your pick to win it all? And who else would you like to see added to the lineup?