Since Palin joined Republican John McCain on the Republican ticket there have been stories that she was once a member of the Alaska Independence Party, never had a passport or traveled overseas until last year, that her husband was arrested 22 years ago on a drunken driving charge, and that she pushed for $27 million worth of federal earmarks into a bill for the tiny town of Wasilla while she was its mayor.
She is also the center of a legislative ethics investigation in Alaska into whether she abused her power in dismissing the state's public safety commissioner over a family dispute with a former brother in law who was an Alaska trooper, who was allegedly abusive toward Palin's family members.
Republican fears were highlighted when US Weekly, a popular entertainment magazine, put a picture of Palin holding her fifth child, 4-month-old Trig, on its cover with a headline that screamed "BABIES, LIES & SCANDAL."
The party's leaders and many of the delegates publicly expressed support for Palin and said the issues being raised so far are not enough to disqualify her. But privately, they are waiting to see how she performs.
"I think what a lot of Republican operatives and delegates here are asking is what else is out there about Gov. Palin?" ABC News' George Stephanopoulos told "Good Morning America" Tuesday.
"Was the vetting process complete and professional? ... And finally, what does it say about Sen. McCain's judgment that he chose someone with no national security experience?" Stephanopoulos said.
Watch ABC's George Stephanopoulos' exclusive interview with Barack Obama this Sunday on 'This Week with George Stephanopoulos'
ABC News' Kate Snow, Katie Hinman, Lindsey Ellerson, John Berman, Ursula Fahy, Rick Klein and Karen Travers contributed to this report.