Fighting broke out again at Taiwan’ s parliament on Friday as opposition lawmakers continued to bitterly oppose the nomination by President Tsai Ing-wen of a senior aide to a top government watchdog post. The Kuomintang (KMT) has labelled the nomination of Chen Chu to head the Control Yuan, an independent government watchdog, as “cronyism” and mounted a noisy campaign to try and prevent the move. Earlier this week the KMT – which was soundly beaten by Tsai and her Democratic Progressive Party (DPP) in January’s elections – occupied the parliament’s main chamber for three days . Several KMT lawmakers on Friday knocked down voting booths inside the chamber to block DPP legislators from casting ballots over the nomination. The KMT has accused the DPP of cheating in part of the vote on nomination this week. The voting went ahead despite shouting and protests from KMT lawmakers, who held banners reading “invalid vote”. About 100 KMT supporters outside the parliament fought with police and some tried to break through barricades, calling on the DPP to withdraw the nomination. “Rejection to cronyism. Withdraw the nomination,” KMT chairman Johnny Chiang told supporters from the back of a truck outside the parliament. In Taiwan, punch-throwing and rowdy protests are not uncommon in parliament. The DPP has a large parliamentary majority, and has been angered by the targeting of Chen, who was jailed in 1980 for helping lead pro-democracy demonstrations against the then-KMT government when Taiwan was a dictatorship. The KMT, under its youthful new leader, Chiang, has been trying to reinvent itself since its election defeat, having failed to shake off DPP accusations they were too pro-Beijing. The KMT faces a further challenge next month in a mayoral by-election in the major southern metropolis of Kaohsiung, traditionally a DPP stronghold. Kaohsiung’s previous KMT mayor Han Kuo-yu was thrown out of office in a recall vote in June.