Today on Boston Public Radio:

— University of New Hampshire pollster Andrew Smith discussed the fickle preferences of New Hampshire’s undecided voters.

— We opened our lines to talk with callers about anything and everything to do with Tuesday’s primary.

— Seacoast NAACP president Rogers Johnson, Manchester NAACP president James McKim, and Granite State Organizing Project director Sarah Jane Knoy debated whether New Hampshire deserves to hold their coveted first-in-the-nation primary status.

— Bernie Sanders senior aide Jeff Weaver discuss Sanders’ electability, his lukewarm support from from the DNC, and why the media is paying closer attention to his campaign this time around than they did in 2016.

— New Hampshire Rep. Anne Kuster discussed her reasons for endorsing former South Bend, Ind., Mayor Pete Buttigieg for president.

— New York Times national politics correspondent Jonathan Martin discussed the 2020 election, and the uphill battle that lower-tier presidential candidates will face moving out of New Hampshire and into Super Tuesday.

— We re-opened our lines to talk with callers about Tuesday’s primary.

— WGBH’s Adam Reilly discussed his latest reporting from the campaign trails of Bernie Sanders and Elizabeth Warren in New Hampshire.