edition of "today." sunday caucuses. the candidates have had their say, now it's time for iowa voters to have theirs. >>> can donald trump win here and just simply start to roll? >> i don't even think i have to campaign anymore. why am i even wasting my time?

why am i even wasting my time?

where are you? it's very loud there. >>> we are back on this sunday morning, january 31st, 2016. the last sunday of january, if you can believe that. >> i can't. >> first month of the new year already over. great crowd out there on rockefeller plaza. want to thank all of them for spending a little bit of their

thought the pair would be able to retire together. but because of a state law, he is learning not quite that simple. nbc's sarah daaloff explains. >> reporter: for four years matthew hickey and ajax have been more than best friends. they have been partners, protecting t t community of marietta, ohio. >> he's been active in several arrests, several seizures of contraband. >> reporter: when officer hickey retired after 34 years of

let's take a short 5-minute recess. the son of a polish immigrant who grew up in a brooklyn tenement. he went to public schools, then college, where the work of his life began -- fighting injustice and inequality, speaking truth to power. he moved to vermont, won election and praise as one of america's best mayors.