Joe Sestak is running for president, here are some congressional basics

Eye on 2020

Former Rep. Joe Sestak leaves the set after the Senate Democrats primary debate with Katie McGinty and Braddock, Pa., Mayor John Fetterman at WTAE-TV in Pittsburgh on Tuesday, April 5, 2016. One of the three Democrats will be selected in the April 26th primary to run against Sen. Pat Toomey, R-Pa. Bill Clark/CQ Roll Call

A latecomer to a crowded presidential field, former Pennsylvania Rep. Joe Sestak announced his candidacy for the Democratic nomination for president Sunday.

Sestak, now the 24th Democrat to launch a bid for the presidency has run twice for Senate in Pennsylvania, losing to Sen. Patrick J. Toomey in 2010 and falling short of his party’s nomination in 2016.

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