If Huckabee goes, who will evangelicals back?

By Ed Stoddard

DALLAS (Reuters) - For White House hopeful Mike Huckabee, the end could be nigh.

On Tuesday, the Baptist preacher goes up against two better-financed, better-known and better-placed rivals in 21 states for the Republican U.S. presidential nomination, and pundits give him next to no chance.

If Huckabee's surprising ride from nowhere to win the first contest in Iowa last month does end among the coast-to-coast slew of voting on Tuesday, the conservative evangelical supporters he inspired will remain a force to be reckoned with in the November 4 election.

"The evangelicals are the wild card. Whoever is going to capture the nomination, if it's not Huckabee, needs to get his slice of the evangelical vote," said Tony Perkins, president of the Family Research Council, a conservative lobby group with strong evangelical ties.

White evangelical Protestants are a key Republican base credited with securing two terms for President George W. Bush.

They account for a fifth of the U.S. population and at least a third of Republican voters, giving them electoral clout in a country where high levels of spiritual belief and church attendance mean religion often mixes with politics.

But Huckabee, a former Arkansas governor, has failed to reach beyond them and his campaign has faded since he shot from the back of the pack to a surprise win in the first of the state-by-state battles in Iowa -- his only victory so far.

He hopes to do well in at least some southern states such as his native Arkansas on "Super Tuesday" next week.