Candice

General Info - Finally, a something that can be a called a challenge *maybe*. If you have a good Ground type like Gabite or maybe even a Garchomp you should be able to knock out Raichu and Luxray quickly. For the others you will have to do some switching to maintain the upper hand. Depending on how you've trained you Pokemon, Volkner's may or may not be a few levels above yours, so just be careful. Paralyze Heals are useful.

Lv46 (Electric) - Raichu will crumble at the sight of any Ground type, so use one. Otherwise he has some pretty powerful attacks so you should use a type like Grass that is resistant to Electric.

Lv47 (Normal) - Either take out Ambipom quickly, before it uses Nasty Plot, or suffer the consequences. Although, it's only special attack is Shock Wave, so a Ground type will be completely resistant to it.

Lv40 (Fighting/Psychic) - Medicham is the only non-Ice type on Candice's team, and is probably her best Pokemon. If it gets in a few Bulk Ups, it can be very dangerous. You need to take it out before it gets 2 Bulk Ups in, so use a Flying type like Staraptor for that job.

Lv42 (Grass/Ice) - Take out Abamasnow just like you did Snover. Any Fire type should OHKO it, but watch out for Wood Hammer if you use a different type.