Conservatives are much more if you factor in the whole of the world than first world liberals which isn't even half of said countries. Another reason why liberals should be the ones going not conservatives is, the fact that conservatives by nature is restrictive and cautious of change, where as liberals are much more gung ho and as they say it progressive not caring for what consequences might arise, therefore it will be much easier for liberals to go to a new world than it would be for conservatives, another reason is that conservatives are pro heterosexual, anti-abortion hence they procreate a lot more than say LGBTQ supporters who cant get children accept by enlisting the aid of the opposite sex and who are pro abortion, thus they will be able to survive on a much smaller planet than conservatives as their numbers will be a lot less. Also their has been a lot of laws and regulations made on planet earth with conservative bias, so for liberals to have a fresh start it will be easy for them to start with a completely clean slate and then they can show the world if their way is better than the conservative way, without any interference from conservatives.