Hello,
I can name a few, I few myself as a libertarian, I know Florian Himsl (Binding of Issac) leans to the right, Doug Tennapel (Earthworm Jim) is an outspoken conservative. The fine folks at Running with scissors (Postal ) have been known to have a conservative stance on many issues in their games.
There is a left leaning culture in the game industry, but there are more conservative game designers than you may think, unfortunately they aren't too outspoken for fear of what their peers, and audience may think.
It sucks to have your opinions negatively affect your sales, so most conservative game designers tend to steer clear of openly flouting unpopular opinions, which sucks, but it is what it is.
If asked I'm not afraid to speak about my politics, but I'm in the minority since I'm financially independent, other game designers who aren't well off may be worried about the consequences, the more well off a game designer is the more likely there will be open about their politics if they lean to the right.
Cheers,
- Celx Requin (Bad Taste Producer, and Developer)