RENEE MONTAGNE, HOST:
To talk more about those opponents and what's happening on the campaign trail, we turn now to NPR's Cokie Roberts, who joins us most Mondays. Good morning, Cokie.
COKIE ROBERTS, BYLINE: Hi, Renee.
MONTAGNE: So let's - it looks like there's one less rival in the Republican contest, now that former Utah Governor Jon Huntsman is expected to drop out today and throw his support to Mitt Romney. Let's talk about the likely effect on the rest of the contenders.