The Republican party seems split between the freedom caucus (less government) and the establishment (not sure what they stand for ... Maybe corporate and military interests?). The Democrats are more-or-less unified around the principle of increasing the size and scope of government, particularly at the federal level.
> The Democrats are more-or-less unified around the principle of increasing the size and scope of government, particularly at the federal level.
No, pretty much zero Democrats see increasing the scope of government as principle. You might plausibly argue that most Democrats agree with the statement that there is at least one area where government needs to expand it's size, role, or influence (though they often wouldn't agree on where or why.)
Then again, most Republicans, even much of the Freedom Caucus, agree with that too, which is why despite small government rhetoric they often vote for expansions in defense, law enforcement, and security spending, staffing, and/or powers.
I think there is a difference in principle, but it's not that Democrats have a principle that growing the government is inherently good: it's that they don't have a principle that growing the government is inherently bad, while many Republicans do. Thus, Democrats would consider proposals for spending mostly in terms of their individual benefits and costs, whereas Republicans - at least the consistent ones - would apply those only after starting from a baseline of disfavor. They may still care enough about some spending priorities that they see the good as outweighing the bad: that isn't inherently contradictory, though considering how much we spend on defense, there's certainly room to question whether it's a rational policy overall.