joining us to talk about what is happening here is cbs news election and surveys director anthony salvanto. anthony always good to have you here. >> thank you a. >> brennan: so explain what you think happening a here with elizabeth warren. there have been some crit sissments that perhaps she is too progressive, too liberal. is that impacting her? >> well her opponents certainly have leveled those criticisms. it may be having some impact in this sense. we see 36 percent of democrats and in particular those not yet considering her say that her plans would be too liberal to defeat donald trump, only six percent, for example, say that about what they think of joe biden's plans, it is a reminder that throughout this campaign the key criteria for democrats has been trying to game out who they think can defeat donald trump, there is ht democrats d liz beth warren as a way they don't describe joe biden but more of them also describe her as risky iinin in a way they do not desce joe biden, so to the extent some of these supporters of the candidates have been moving back and forth, this month the on

cbs news elections and surveys director anthony salvanto is here to break it all down. ny, joe biden has bounced back. what's behind that? >> hi, omar. he has bounced back. elizabeth warren was leading that field in our last poll last month. has faced some criticism from biden and other democrats saying that her plans might be too liberal for a general election, too liberal to beat donald trump. democrats are worried about that. we find that about a third of democrats say that if her policies. very few say that about joe biden's,' and of course electability remains a key concern for that democratic base. >> mayor pete is at 9% in wider polls, but he is making gains in iowa. why is he making those gains? >> well, it's sort of the classic play using the ground game, getting out there. we know he is campaigning hard in iowa. also in new hampshire, and we have seen him now rise basically to the top of the field there in iowa, also making gains now in double-digits in new hampshire, though elizabeth warren still leads there. >> anthony salvanto, thank you very much. >> thank

cbs news elections and survey director anthony salvanto is here to break it all down. anthony, joe biden has bounced back. what is behind that? >> hi, omar. he has bounced back, elizabeth warren was leading that field in our last poll last month. what has happened is that warren has faced some criticism from bied enand other democrats saying that her plans might be too liberal for a general election. too liberal to boat president trump. democrats are worried about that. we find that about a third of democrats say that if her policies, very few of them say that about joe biden and of course electability remains a key concern for that democratic base. >> mayor pete is at 9 percent in wider polls but he's making gains in iowa. why is he making those gains? >> well, it's sort of the classic play using the ground game, getting out there. we know he is campaigning hard in iowa, also in new hampshire and we have seen him now rise, basically to the top of the field there in iowa, also macking gains now in double digits in new hampshire, though liz bit warren still lead there. >