Complex sentence: Other key backers such as Bill Newmark, the chairman of the Bronx Conservative Party, joined his legislative payroll, however, it was Velella's alliance with D'Amato that was crucial to Velella's political relevance.
Split into simpler sentences: Other key backers such as Bill Newmark, the chairman of the Bronx Conservative Party, joined his legislative payroll. However, it was Velella's alliance with D'Amato that was crucial to Velella's political relevance.