Assemblyman Tim Donnelly, a gun-rights advocate, outspoken critic of illegal immigration, and social conservative, has announced he will challenge Governor Jerry Brown in next year's gubernatorial election.

A staunch conservative, Donnelly said he is unfazed by California's left-leaning electorate.

The assemblyman said he will "unite the divided majority'' through a grassroots campaign offering voters an alternative to high taxes and what he describes as government interference by Brown and his fellow Democrats.

Donnelly joins former Lieutenant Governor Abel Maldonado as challengers to the Governor.  

While Brown has yet to announce a re-election bid, he has amassed nearly $16 million.

Next year is the first in which candidates for governor will run in a top-two primary, meaning they do not need the party's endorsement.