Moderate vs Extremist

I don't think I can make this point any better than James Taranto, so I won't try.

In a USA Today op-ed, Kirsten Powers, a onetime Clinton administration official, celebrates the rise of "moderate" Democrats:

It was critical that Rep. Rahm Emanuel of Illinois and Sen. Charles Schumer of New York--who ran the campaign committees--recruited candidates palatable to conservative or moderate voters who wanted to send a message about the war, but who didn't want to compromise on beliefs about abortion, gay marriage or the role of religion in public life. . ..

In North Carolina, Democrat Heath Shuler ran as a born-again Christian who opposes abortion. Pro-gun Brad Ellsworth, who opposes abortion and favors an amendment banning gay marriage, will be a new representative from red-state Indiana. Rep. Ted Strickland, a United Methodist minister, became the first Democrat to win as governor in Ohio in 20 years.

This column is scrupulously nonpartisan, so it falls to us to point out the double standard here: How come Democrats who oppose abortion and same-sex marriage are "moderates," while Republicans who hold the same views are "extremists"?