Michelle Malkin has already named it. PDS: Palin Derangement Syndrome. It's the irrational hatred of Vice Presidential nominee Sarah Palin, Governor of Alaska, indulged until the intellect is shattered and only emotion reigns.

Why do the liberals hate Sarah Palin? Only one reason: abortion.

Liberals believe that abortion is an indispensable necessity, a right without which humanity itself is lost. Liberals believe that in certain circumstances, no sane person at liberty will forgo opting for an abortion.

And in two such circumstances this year, Sarah Palin did just that. She knowingly and willfully gave birth to, and claims to love, her son Trig, afflicted with Down Syndrome. I mean really; how is America to wipe out Down Syndrome without recourse to abortion?

And now her underage teenage daughter Bristol, we learn, is five months along, and Palin and her husband have the unmitigated gall to support her in her choice to keep her baby, and marry the father. Now, everyone knows that teenagers aren't old enough or mature enough to make the decision to raise their babies; they're only old enough to choose abortion; preferably without notifying their parents.

Liberals don't believe that conservatives are actually capable of loving their children. They don't believe that the parents of Down Syndrome babies really love them. To a liberal, the only two kinds of parents there are for Down Syndrome babies are those who abort their children, and those who wish they had.

To a liberal, the proper conservative response to an unintended teenage pregnancy is to disown the child, forcing her to either keep her baby in poverty-stricken squalor, or to abort the baby. (And the proper liberal response to that situation, as Barack Obama himself so cleanly articulated, is to simply abort the baby to avert the "punishment" that follows on the "mistake".) But the Palin family has chosen to embrace their daughter, and her baby, and the baby's father.

This makes liberals' heads explode. They hate Sarah Palin because she has made the choices that they believe no one should make: chosen life for a Down Syndrome baby and the unplanned child of an underage girl. Conservatives are supposed to be about hate, but Sarah and Doug Palin have reacted in both instances with love.

The cognitive dissonance is just too much for the already-weak liberal brain. It shatters their reason. Liberals know that they are the party of love, and they would have killed these children. Liberals know that conservatives are the party of hate, and yet Doug and Sarah Palin have chosen to love these babies.

The Palins fly in the face of everything that liberals know and believe. Of course they are deranged.