The progressive political movement had its heyday about a hundred years ago and the term lost any real meaning when the movement sputtered out after Roosevelt Bull Moose party dissolved.
Absent an organized movement, the term drops into a general ideal of supporting progress and change. Progressive can be conservative or liberal in nature. Progressive liberals support social and economic change for the general public. What distinguishes liberals from progressive liberals is that progressive liberals support government regulations and enforcement actions, such as banking reform in the form of regulators and laws to force change on banks. Liberals might want the same things but shy away from authoritarian actions such as enforcement through laws and regulations.
Campaign contributions are legal and protected as free speech under the Citizen's United ruling. Progressives advocate repealing this ruling but feel no moral obligation to stop taking them if legal. The moralistic liberal would eschew them on principle, which more closely matches Paddy's attitude. The less lofty progressive may campaign for finance reforms but sees no reason to eschew legal campaign contributions, especially if by not accepting legal contributions, their opponent, who favors unlimited donations from corporate donors, gains an advantage..
Examples of progressive (progressive liberal) reforms and actions are: Social Security, Civil Rights Act, EPA, Affordable Care Act.
Examples of liberal actions and movements: Tree sitting to protect forests, sit-in type protests, Black Lives Matter, Planned Parenthood