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More 2012: Brown leads Warren in new poll

IOWA: Crossroads is on air hitting Rep. Leonard Boswell (D-IA), who is in a toss-up race with Rep. Tom Latham after redistricting. “Crossroads GPS bought $77,000 worth of airtime for the new spot to run across the Des Moines and Omaha television markets through March 7, according to a spokesman for the group,” Roll Call reports. “It’s clear the Iowa race has become a top target for Crossroads GPS this cycle. The spot is part of more than $370,000 Crossroads has spent on issue advertisements on this House race since late October.”

MAINE: “Maine Democratic Reps. Chellie Pingree and Mike Michaud have begun the process of building Senate campaigns, even though neither has come to a final decision on whether to run to succeed retiring Sen. Olympia Snowe (R),” Roll Call writes. “Sources in both camps maintain that the looming March 15 deadline to file forced the two Representatives to move ahead with gathering petition signatures as they still mull a Senate run. While there have been reports that national Democrats are pushing for the two Members to decide between themselves which of them will run for Senate, it is not beyond the realm of possibility that the two will square off in the Democratic primary, according to a Maine Democrat.”

MASSACHUSETTS: “A second poll is showing Republican US Senator Scott Brown leading Democrat Elizabeth Warren by 9 to 10 points, a sign of potential concern for Warren after months of polling showed a closer race,” the Boston Globe writes. “The poll of 456 voters, conducted by Opinion Dynamics of Cambridge, shows Brown leading Warren 52 percent to 42 percent in a theoretical match-up.” And: “The poll also showed former Governor Mitt Romney is unpopular in the state, with 45 percent saying they view him favorably and 52 percent viewing him unfavorably. In a theoretical match-up with President Obama, he would lose 53 percent to 35 percent, according to the poll.”

NEW JERSEY: “A new Quinnipiac poll in New Jersey shows support for same-sex marriage climbing to a new high, 57% to 37%,” Political Wire writes.

OHIO: The Boston Globe: “Ohio looms as most important of Super Tuesday states…” And Joe the Plumber was at a Romney event in Ohio yesterday. He was at a Santorum event earlier in the week and says he hasn’t endorsed anyone.

Similarly, the New York Daily News writes, “All eyes are now on Ohio in the Republican race for the White House.”

The Hill: “Ohio is next battlefield for the GOP.”