Not a liberal as an infant (below 26 as now legally defined)? Then you have no heart.
Still a liberal at 40? Then you have no brain.
As America grays (check the birth stats) it grows more conservatives. As immigrants, legal or Obamese, integrate and discover how nice it is to have a little left from your wages after paying taxes they grow more conservative.
Besides, liberals abort more so are having fewer replacement critters.
Patience, boys and girls, it might take a while yet.
Older people don't turn conservative. This was seen quite vividly in the 2012 elections as the 35-45 age group suddenly became a much more left-leaning age group compared to previous elections. It is also very likely to be seen in the 65+ age group soon since baby boomers are not as hard core conservative as the silent gens. Older generations are just generally "more conservative" they don't turn that way.
The biggest change a person undergoes politically/ideologically is when they're 16 to 24 years old. After that the further up in age you go the less and less change you tend to see.
The lower taxes line doesn't sell as well as it did in the 1980's.
Liberals abort more???? Oh right because conservatives only have conservative kids and liberals only have liberal kids right? give me a break.