I don't have the exact quote, but Lenin did say to judge a party not by its slogans and names but by its actions.
"In order to understand the real significance of parties one must examine, not their labels, but their class character and the historical conditions of each separate country."
"In order to understand the real significance of parties one must examine, not their labels, but their class character and the historical conditions of each separate country."
โ- Lenin, "The Labor Government in Australia"