Getting Electabuzz to evolve into Electivire isn't easy, but it is possible in Pokemon Glazed.
Usually, there are a number of ways to evolve a Pokemon, often based on their happiness level - but with Electabuzz it's different.
The only way to evolve this particular Pokemon is to give him the item electerizer while you're trading him. This will trigger the evolution into Electovire.
Then get ready for those thunderbolts!
If you're wondering where to find the electerizer - you should be able to pick it up at the Valley Windworks, behind the windmills where you can surf.
Make sure to trade him while holding the electerizer in hand, and you'll notice an instant and spectacular evolution!