The KVP was at the height of its power from 1958 to 1965. It was the dominant force in all cabinets, and every prime minister during this time was a party member. In 1958 the Fourth cabinet of Drees fell and Louis Beel formed an interim-cabinet with KVP, ARP and CHU. After the 1959 elections the KVP formed a centre-right cabinet with ARP, CHU and VVD, led by KVP member Jan de Quay. It continued to strengthen the welfare state. After the 1963 elections this cabinet was succeeded by a new cabinet of KVP-CHU-ARP-VVD, which was led by the KVP's Victor Marijnen. This coalition oversaw an economic boom. Norbert Schmelzer became the party's new leader, again operating within the House of Representatives and not the cabinet. A cabinet crisis over the Netherlands Public Broadcasting however caused the cabinet to fall in 1965. The KVP and ARP formed a cabinet with the PvdA, led by the KVP's Jo Cals. This cabinet also fell in the Night of Schmelzer, in which Norbert Schmelzer forced a cabinet crisis over the cabinet's financial policy. This was the first fall of cabinet, which was directly broadcast on television. An interim government of KVP and ARP was formed, led by the ARP's Jelle Zijlstra.