On the second stop of her One Nation bus tour, Sarah Palin pulled over for a visit at the U.S. National Archives in Washington D.C. on Monday, further fanning speculation over whether she will run for the Republican presidential nomination in 2012.

Palin, however, is still mum about her plans, saying we're still kind of contemplating that. She chose, rather, to speak about her bus tour, which kicked off Sunday with a Rolling Thunder motorcycle rally in Washington D.C.

The bus, which will take the Palin clan across the east coast, making pit stops at famous historical sites for their summer vacation, is meant to celebrate the good things that bring Americans together, she wrote on her website.

The 2008 vice presidential candidate also said the tour is to further promote her message that America does not need a fundamental transformation, but a restoration of all that is good and strong and free in America!

And with that, she said she doesn't doubt that a Republican can beat Obama in 2012, Fox News reported.

Any Republican candidate is very, very electable, she said. I think Americans are ready for true change.

Palin was reportedly scheduled to be in Philadelphia later Monday to visit the Liberty Bell.