You seem to want to play silly semantical games. Obviously, a true statement can be true within a particular context, or can have limited exceptions.
Drinking water is good for you.
Exercise is good for you.
Protein is good for you.
Democrats are liberals, and Republicans are conservatives.
All of the above are true statements. At the same time, they are true within a particular scope, or have limited exceptions. Drink enough water within a limited period of time, and it will kill you. Too much exercise can injure your body rather than help it. Eat only protein, and it's likely to ruin your health. And while the latter statement is generally true as well, a conservative being elected as a Democrat is not impossible, and we all know there are liberal Republicans.