Here's how to get it:
* You need to have beaten the first gym leader, Falkner, and obtained the Cut HM.
* Head to Route 34, which is located north of Azalea Town.
* Electrike is a rare encounter, so you may need to search for a while.
Tips for finding Electrike:
* Use the "Sweet Scent" TM or a Pokemon with the "Aroma Wake" ability. This will increase the chance of encountering a wild Pokemon.
* Try using the "Repel" item to avoid encountering weaker Pokemon. This will increase your chances of encountering a rarer Pokemon like Electrike.
* Consider using a PokéRadar. The PokéRadar allows you to find Pokémon in a specific area with increased odds of finding a rare Pokemon like Electrike.
Good luck finding Electrike!