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The opposition is still repeatedly bringing up that scandal as their attack.
Literal
Opposition-party [topic-は] as-usual that-one [gen-の] scandal [obj-を] repeatedly is-criticizing-[polite ongoing-ています].
相変わらず ('as usual, unchanged') is a conversational adverb describing continuity of a state or behavior. 例の ('that well-known, the one in question') is a useful determiner for referring to something previously mentioned or shared knowledge. 繰り返し ('repeatedly') is an adverbial form derived from 繰り返す ('repeat'). The sentence is newspaper/political commentary register.