@CNN: Massachusetts Sen. Elizabeth Warren took a major step toward a presidential run on Monday, announcing she is forming an exploratory committee ahead of an expected campaign for the Democratic nomination in 2020 https://t.co/pD2T9DJM87 https://t.co/bOBQGQL7nC

@CNN: Massachusetts Sen. Elizabeth Warren took a major step toward a presidential run on Monday, announcing she is forming an exploratory committee ahead of an expected campaign for the Democratic nomination in 2020 https://t.co/pD2T9DJM87 https://t.co/bOBQGQL7nC