...the noble new party that freed the slaves and preserved the Union is the very same party that is now in cahoots with the crooked railroad tycoons and with the Wall Street cornerers of this-and-that, thus making it hard for a noble creature like Bigelow -- like Stedman? -- to confess to the bankruptcy of what only ten years ago was the last or latest, best or better, hope or dream of an honourable system of government (p. 64, Vintage ed).
Of course, the Republican party was formed primarily from the rump of the collapsed Whig party, which also primarily represented moneyed interests. Lincoln himself made much of his money representing railroads. To be sympathetic to the producers of jobs and wealth has not always meant being totally beholden to them. But it sure does mean that for the Republican party of Gingrich, DeLay, Ney, Cheney, Bush Jr., Rove, McConnell and Boehner.