The conversation about typing on Shoddy, and to some extent here has been similar to that of the Democratic Presidential Primaries. Today, both Clinton and Obama came together in order to unite their party, so I think we should "unite" to make this next CAP Pokemon a Poison/Electric. Here are some reasons as to why it should be both:
1. Poison absorbs Toxic Spikes. Nuff said.
2. Electric is a great stab that makes up for poison's rather poor stab. Poison is resisted by 4 types, and one is immune to it. It's super-effective on only grass. Electric, however, is super effective on two types, but...has about the same number resistant. At least Poison hits grass, one that resists electric. And an electric stab means this wont be stopped by Gyarados. Electric is invaluable as the majority of Pokemon are Water, 4 of those Waters being Water/Ground, while the rest take neutral or supereffective damage from it. Also, Flying is another ever-present type that's been paired with every other type. Electric gets that too.
3. Poison is under-represented in OU. Tentacruel and Gengar are the only 2 in OU, and the rest linger at BL or below.
4. Poison has many options to pass on through breeding for utility. Many Poisons are in the "Indeterminate" group, as well as other utility pokemon like Gardevoir. Being a Poison-type would, to a certain extent, bring about a diverse utility movepool being from (possibly) the Indeterminate Group.
5. Together, they sport 7 resistances, while having 2 weaknesses (one of which is a common one, 4x). I know people may suggest Steel as a possible secondary type to either, but I don't think that will cut it. We have a Steel/Electric in the form of Magnezone. Though Steel has a plethora of resistances and an immunity, it brings too much weakness. Steel is so plentiful in OU that everyone is bound to be packing a Fire or Fighting move on their team. Ground was a staple before Steels were so populous do to Earthquake having such consistently high damage. Most Steels are weak to Fire, which made Fire a more common type to choose.
6. Thunder Wave is guaranteed on an electric, right? So it can also stop sweepers.
7. A 4x Ground weakness is overrated. That could be the balancing act for this Pokemon, holding it back from being a potentially invincible creature (well, extremely powerful and hard to beat).
8. Electric is an under-represented type period. Not tier specific. But, in general. And how many other types is it paired up with? Water, Flying, Ghost, Steel..........itself...
9. Poison/Electric is just plain cool. I liked the idea before I did the logic.