Warwick, R.I. -- Liberal Republican Sen. Lincoln Chafee refused to support President Bush in the last election, opposed the GOP tax cuts and was the only Republican to vote against the use of military force in Iraq, a war he has likened to Vietnam. So why, a year before the election, is the GOP embracing Chafee and spending close to $200,000 on television ads aimed at undercutting his conservative rival in the Republican primary, Cranston Mayor Stephen Laffey? Like him or not, Republicans consider Chafee their best chance to win in heavily Democratic Rhode Island.