Flanked by his wife and son, Collins told a crowd of about 100 supporters he will stand in Novemeber for a second term.
"We have accomplished so much over the last several years, but our work, and most importantly our fight to make Erie County a better place, is far from over," he said.
Collins was introduced by Erie County Republican Chairman Nicholas Langworthy and joined by several Republican county legislators on the same factory floor where he announced his candidacy four years ago.
Collins reinforced many of the themes from his State of the County speech delivered earlier this month at South Buffalo Charter School including fiscal responsibility, smaller government and holding the line on taxes.
The incumbent is expected to face a strong challenge from a yet-to-be-named Democrat. Erie County Comptroller Mark Poloncarz and Assemblyman Dennis Gabryszak have been mentioned as possible candidates.
Listen to Collins speech to supporters: