I'm debating between Electric and Dragon. Frankly, I don't like either of them very much. But, I've narrowed it down to those two.
Here is a list of the top 25 pokemon on the Shoddy usage chart. I've done a quick analysis on each one to determine if Dragon or Electic would be a preferable type matchup against each one. For those of you that don't want read the wall of text that follows. Here's my tally:
Electric is advantageous against 15 of 25
Dragon is advantageous against 6 of 25
4 of them are even
I still haven't voted yet. But, after this breakdown, I'm seriously leaning toward Electric.
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1 Garchomp
Either type is screwed against Chomp. But, Dragon at least can hit Chomp SE. And Chomp is immune to Electric.
Advantage: Dragon
2 Gengar
Electric and Dragon are neutral to Gengar's Shadow Ball, and both resist Gengar's Tbolts. Attack-wise, both hit Gengar neutral. Electric movepool and Dragon movepool are a wash against Gengar.
Advantage: Even
3 Blissey
No typing advantages on offense or defense. Lots of Blisseys carry Ice Beam.
Advantage: Electric
4 Gyarados
Gyarados can screw either type with EQ. However, many Gyar run Ice Fang, instead. Some carry Stone Edge. When facing Stone Edge and Ice Fang versions, Gyar runs hard from an Electric.
Advantage: Electric
5 Tyranitar
All TTars will shit all over this pokemon with EQ. Both Electric and Dragon are neutral offensively and defensively.
Advantage: Even
6 Bronzong
Both types are hosed by Zongs with a Psychic move or EQ. Electric resists Gyro Ball versions, which are common. Electric hits Zong neutral, while Dragon is resisted by the steel bell.
Advantage: Electric
7 Lucario
Lucario resists Dragon attacks. Electric hits it neutral. Electric resists the occasional Bullet Punching Luke.
Advantage: Electric
8 Heatran
All Earth Power Heatrans (which is common) will own this thing. Dragon resists Heatran's fire attacks. Many Heatran carry Dragon Pulse or HP Ice specifically to allow it to switch in on Dragons and threaten. Electric hits Heatran neutral, Dragon is resisted. Electric resists Heatran Steel attacks, but those are very rare.
Advantage: Even
9 Infernape
Dragon completely walls Infernape. Electric is neutral.
Advantage: Dragon
10 Salamence
Dragon hits Mence SE, but is hit SE in return. Electric is neutral offensively, and defensively resists Mence's Flying STAB, which is rarely used in general, but more used on the CAP server though.
Advantage: Electric
11 Metagross
All Metas will own this thing with Zen Headbutt (not unheard of on the CAP server) and EQ. Electric resists Meta's steel attacks, which are common anyway, but even more on CAP, where Bullet Punch Meta is a common Syclant-killer. Electric hits Meta neutral, Dragon is resisted.
Advantage: Electric
12 Starmie
Psychic Starmie owns either type. Surf Starmie is resisted by Dragon. Ice Beam Starmie is a common Dragon-killer. T-Bolt Starmie, commonly used for Gyar, is resisted by Electric. Electric hits Starmie SE.
Advantage: Electric
13 Gliscor
Glicor kills both with EQ, which is on every Gliscor in existence. Gliscor is immume to Electric. Electric resists Hera-killer Aerial Aces. Dragon is neutral all around.
Advantage: Dragon
14 Celebi
Psychic Celebi kills both. Celebi resists Electric. Dragon resists Celebi Grass Knots.
Advantage: Dragon
15 Swampert
Swampert pounds both with EQ. Pert is immune to Electric. Dragon resists Swampert's Water STAB, and hits Swampert neutral.
Advantage: Dragon
16 Weavile
Weavile slaughters Dragons with Ice moves. Vile is neutral all around with Electric.
Advantage: Electric
17 Skarmory
Skarmory is one of the most common Dragon switchins. Electric resists both of Skarmory's STABs, and hits Skarm super-effective.
Advantage: Electric
18 Forretress
EQ Forry hurts both versions. Forry is commonly used to resist Dragon attacks. Electric resists the common Forry Gyro Ball, and hits back neutral.
Advantage: Electric
19 Heracross
EQ Hera hurts both versions. Both are neutral offensively and defensively against Hera's typing and other common moves.
Advantage: Even
20 Vaporeon
Dragon resists Vappy's water attacks. Electric hits Vappy SE. Vappy commonly carries Ice Beam which owns Dragons. Vappy also commonly uses HP-Electric, which is resisted by both.
Advantage: Electric
21 Zapdos
Electric resists both of Zapdos STABs. Dragon resists only Electric. Zappy commonly carries HP-Ice which hurts Dragon. Dragon resists occassional Swampert-killing HP-Grass versions. Electric and Dragon both hit Zapdos neutral.
Advantage: Electric
22 Azelf
Psychic hurts both versions. Dragon resists common Flamethrowers and Grass Knots from Azelf. Both are neutral offensively.
Advantage: Dragon
23 Togekiss
Electric resists the omnipresent Air Slash. Electric also hits back SE. Dragon is neutral both ways.
Advantage: Electric
24 Cresselia
Psychic Cressy owns both. Ice Beam Cressy is common and hurts Dragon. Charge Beam Cressy, also common, is resisted by both. Both types hit Cressy neutral.
Advantage: Electric
25 Magnezone
Both types resist Magnezone's Electric moves. Electric resists the occasional Flash Cannon. HP-Ice is bog-standard on Magnezone, just for Dragon-killing.
Advantage: Electric