One analysis of Schaffer's three-term congressional record places him as the 14th most conservative out of more than 3,400 lawmakers to go to Washington since 1937. Udall, though less extreme, falls squarely within his party's liberal wing — and based on his votes is more liberal than Clinton and Obama.
Less extreme? Schaffer was ranked the 14th most conservative out of more than 3,400 lawmakers. Udall was ranked 509th, although that number doesn't show up in the article. 14th (R) = 509th (D). It's fair and balanced! And according to the Post article, both need to work on coming to the middle.
The Post continues to compare Apple Pie to Oranges:
Those voting records present significant problems for the early strategies of both campaigns, which depend on repositioning their candidates to appeal to the moderate and independent voters who most experts say will decide the race.
There's more...the update looks at the data and finds that if you look at the data for the current crop of politicians (the data used for the Post study goes back to 1932), the numbers become even more stark and surprise, surprise! Schaffer is on the far right extreme and Udall is basically right there in the middle as he claimed.