There are many radical remarks in his political broadcasting
この文章は以下のように翻訳できます。
彼の政見放送には過激な発言が多い ー There are many radical remarks in his political broadcasting
彼の ー (in) his
政見放送には ー political broadcasting
過激な − radical / polarising / divisive
発言 ー opinions / remarks
が多い ー there are many
参考になれば嬉しいです。