Palin, while fervent in her opposition of President Obama, had not been full-throated in her support of Romney as the GOP nominee. She voted for Newt Gingrich in the GOP primaries.
She did signal her support of Paul Ryan as Romney's choice of running mate.
But in a 922-word post early Monday, Palin urged her many supporters to get out the vote Nov. 6 for Romney and "the many good Republican candidates who are running for the House and Senate this year."
"Tuesday is our chance to turn things around," she wrote, arguing that Obama has "transformed us from a nation of hope to one of anxiety."