Sarah Palin quickly emerged as the front-runner after announcing a run for Congress in a summer special election, but Alaska Republicans are cautioning the former governor is far from a shoo-in.

Palin is well known and was immediately endorsed by former President Donald Trump upon entering the race to succeed Republican Rep. Don Young, who died last month after nearly 50 years in office. But the 2008 GOP vice presidential nominee faces obstacles ahead of the Aug. 16 special election, chief among them lingering voter resentment over her resignation from the governor’s mansion in 2009 before her only term expired — ostensibly to pursue political fame and fortune.