TUESDAY’S CAMPAIGN ROUND-UP….Today’s installment of campaign-related news items that wouldn’t generate a post of their own, but may be of interest to political observers.

* After two campaign cycles as chairman of the Democratic Senatorial Campaign Committee, New York’s Chuck Schumer is stepping down. How much credit Schumer deserves is open to some question, but Democrats gained at least 13 seats during his tenure.

* Sen. Bob Menendez (D) of New Jersey will replace Schumer at the DSCC. Menendez served as the vice chair of the committee for the last two years.

* A few new polls have been released on the Senate runoff race in Georgia. A new Politico/InsiderAdvantage poll shows Sen. Saxby Chambliss (R) leading Jim Martin (D) by three (50% to 47%), while Public Policy Polling shows Chambliss up by six (52% to 46%), and a Mellman Group poll taken for the DSCC shows Chambliss’ lead at two (48% to 46%).

* Speaking of the race in Georgia, Rudy Giuliani will campaign in support of Chambliss today, and Sarah Palin will speak at four rallies in Georgia on Monday.

* In case you thought the recount in Minnesota’s Senate race couldn’t get messier, consider the question of missing ballots.

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Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.