That would improve her odds, greatly.
Being governor is usually a great pathway to the presidency.
But, for a Democrat being governor of California at this point in history is analogous to having the proverbial millstone place around your neck.
California is a veritable fiscal Blackhole waiting to swallow any politician stupid enough to get elected there.
The Bankruptcy of California is not an IF but a WHEN.
There is no conceivable way out of that fate. Any candidate for Governor of California has to know that, unless he has a plan for getting out of that morass looking like a hero, it is a career ender.
It worked for Richard Nixon. Although he did not become Governor.