You are correct about how they would govern. I was making an observation about how they campaign. Traditionally, political parties tell people in advance what they will do ("a chicken in every pot"). The Democrats stopped doing that a long time ago. Their plans exist, I'm sure, but they're fairly hidden. The Democrat campaign is one of attack and destroy -- nothing about proposing or building.
I think they know that most people wouldn't buy it if they did. Mondale got slaughtered in '84 when he said what he would do: raise taxes. Everyone knew that's what they wanted to do, but when he said it outright it just confirmed what we already knew. Likewise, in '72, when McGovern said he'd go to Hanoi and beg on his knees for the POWs to be released, he got slaughtered in a similar manner. When Rats say what they will do, they get clobbered, because its so far out of the mainstream.
So they have to fall back on dodging and weaving, lying, co-opting others' ideas, and general obfuscation. Of course, the Rats have had and always will have willing accomplices in the lamestream media, and an electorate that is, by and large, I'm sorry to say, somewhat lazy and unwilling to work any more than necessary to get information other than what is spoon-fed to them by the networks.
That's why I have to laugh when Rats and other pundits complain about the results of the '02 elections and why the reason the Rats didn't do too well was because they didn't do a good job of articulating or getting their message out. I think they lost quite a few races precisely because they did get their message out, and people didn't like it.