Updated 10:40 a.m. Sunday

Sen. Charles E. Schumer (D-N.Y.) on Saturday became the most senior Democratic lawmaker yet to call on Hillary Rodham Clinton to run for president in 2016, calling her the best-prepared to "vanquish" tea party Republicans in the next election.

Sen. Charles E. Schumer (J. Scott Applewhite/AP)

Election Day 2016 is still more than three years away, and Clinton isn't expected to make a final decision on whether to run for president until next year. But that didn't stop Schumer, the third-ranking Senate Democrat, from using a rare visit to Iowa to do some early campaigning on behalf of his former Senate colleague from New York.