A 106-year-old American nun living in a convent in Rome could well be one of the oldest voters to cast a ballot in the 2008 US Presidential election.

Sister Cecilia Gaudette, who last voted for President Eisenhower in 1952, has registered to vote and says she will vote for Democrat Barack Obama.

Although hard of hearing, she keeps herself informed by reading newspapers and watching TV at the convent.

"I'm encouraged by Senator Obama," she says.

"I've never met him, but he seems to be a good man with a good private life. That's the first thing. Then he must be able to govern," she adds.