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And we’re off: Here’s what you need to know in politics today

Here's what's new today: Ted Cruz makes it official, a big week for Boehner, Obama rebukes Bibi, and all the latest polling on the potential 2016 GOP field.

US Senator Ted Cruz (R-TX) delivers remarks before announcing his candidacy for the Republican nomination to run for US President March 23, 2015, at Liberty University, in Lynchburg, Va. (Photo by Paul J. Richards/AFP/Getty)
US Senator Ted Cruz (R-TX) delivers remarks before announcing his candidacy for the Republican nomination to run for US President March 23, 2015, at Liberty University, in Lynchburg, Va.AFP/Getty Images

Chuck Todd

Chuck Todd is NBC News' chief political analyst and the former moderator of "Meet The Press."

Mark Murray