Oil rises as investor confidence over U.S. polls boosts risk assets

By Amanda Cooper LONDON (Reuters) - Oil prices rose on Tuesday, ahead of the U.S. presidential election, as investors unwound some of their recent bets against economically sensitive assets such as crude and equities. In a swell of investor risk appetite, U.S. stocks racked up their biggest one-day gain since March on Monday, which fed into an easing in the dollar that underpinned more risk-linked assets such as oil, copper and European equities on Tuesday. The most recent polls have put Democra