Surging Joe Biden has picked up a major endorsement in Michigan from the state's governor, Gretchen Whitmer.<br />Biden is quickly consolidating support from centrist Democrats as the race narrows between him and Sanders.<br />Whitmer told MSNBC's Morning Joe that she would be voting for Biden in the state's March 10 primary.<br />Six states hold primaries next Tuesday.<br />Michigan has the most delegates, with 125 up for grabs.<br />Bernie Sanders won Michigan in 2016's Democratic primary.
