Lenin

To decide once every few years which member of the ruling class is to misrepresent the people in parliament is the real essence of bourgeois parliamentarism, not only in parliamentary-constitutional monarchies, but also in the most democratic republics ... How can it be dispensed with? ...
The way out of parliamentarism is not, of course, the abolition of the representative institutions and the electoral principle, but the conversion of the representative institutions from mere "talking shops" into working bodies.

"The Commune was to be a working, not a parliamentary body, executive and legislative at the same time."

The State and Revolution (Essential Works, Dover 1987, p. 305)

Monopoly has sprung from the banks. The banks have developed from modest intermediary enterprises into the monopolists of finance capital. Some three or five of the biggest banks in each of the foremost capitalist countries have achieved the "personal union" of industrial and bank capital, and have concentrated in their hands the power to dispose of thousands upon thousands of millions which form the greater part of the capital and revenue of entire countries. A financial oligarchy, which throws a close net of relations of dependence over all the economic and political institutions of contemporary bourgeois society without exception - such is the most striking manifestation of this monopoly. ...
Monopolies, oligarchy, the striving for domination instead of the striving for liberty, the exploitation of an increasing number of small or weak nations by an extremely small group of the richest or most powerful nations - all these have given birth to those distinctive features of imperialism which compel us to define it as parasitic or decaying capitalism. More and more there emerges as one of the tendencies of imperialism, the creation of the "bondholding" (rentier) state, the usurer state, in which the bourgeoisie lives on the proceeds of capital exports and by "clipping coupons."

Imperialism, the Highest Stage of Capitalism (Essential Works, p. 266)