(CN) — Swapping Kamala Harris for Joe Biden could enable the Democratic Party to keep control of the White House this fall, many Democrats believe — but it might also be the very thing that costs them the U.S. Senate.
The battle for the Senate is razor-close this year. Republicans hold 49 seats and are favored to keep all of them, as well as picking up a 50th with the retirement of Democrat Joe Manchin in ruby-red West Virginia. If Harris wins the presidency, Republicans would need to flip just one additional seat to control the upper chamber.
Two months ago, when Biden was still the apparent nominee, polls showed that other seats were unlikely to change hands. But since Harris took over, there has been a dramatic change in Montana, with Republican challenger Tim Sheehy suddenly grabbing the lead from Democratic incumbent Jon Tester.
Ironically, while Harris’ new-age California style is faring better in the presidential swing states than Biden’s elderly working-class appeal, it appears to have had the opposite effect in the country’s most critical Senate race — which could end up being the very thing that keeps a President Harris from enacting a legislative agenda.
Prior to the Biden/Harris switch, Tester was consistently leading his Republican opponent by 2 to 9 points in the polls. But afterward, Sheehy quickly gained the upper hand — he now leads by 5 points in the RealClearPolitics average, with the two most recent polls showing him even further ahead.
“There’s no specific evidence” that the Harris swap directly upended the Montana race, said Jeremy Johnson, a political science professor at Carroll College in Helena, Montana — but on the other hand, “there’s also no other good explanation” for the dramatic shift in the polls that occurred at exactly that time, he noted.
And there are plenty of reasons to suspect that Montanans are more put off by a Harris-led Democratic Party than one helmed by Biden.
Tester is a centrist Democrat who has already won three terms in the Senate in a heavily Republican state, a feat he accomplished by combining a folksy working-class background, moderate political views and a willingness to reach across the aisle — hallmarks of Biden’s own Senate career.
Tester positions himself as a bipartisan populist who supports the Second Amendment and veterans’ issues, said Christopher Muste, a political scientist at the University of Montana.
Harris, on the other hand, was this century’s second-most liberal U.S. Senator after Elizabeth Warren, according to the UCLA Voteview project. Her views on green energy and social issues don’t play well in a heavily agricultural state with a significant coal industry.
And then there’s the fact that she’s from California. Large numbers of Californians began moving to Montana during the pandemic, prompting a significant backlash as natives blamed the newcomers for skyrocketing home prices, congestion and a loss of access to public lands. “Don’t California my Montana” bumper stickers began popping up all over the state.
Across Montana, “there’s a resentment of Californians,” Johnson said.
Kiersten Iwai agreed.
“There’s so much resentment,” said the executive director of Forward Montana, a youth-oriented civic engagement group. “You can just see that by people’s bumper stickers, and by talking with people.”
But the clearest evidence that the Biden/Harris swap is dragging Tester down is also the simplest: Tester, who endorsed Biden for reelection, has pointedly said he won't endorse Harris — and he didn’t even attend the Democratic national convention that nominated her.
“Folks have wanted to nationalize this race, and this isn’t about national politics,” Tester explained when asked about his refusal to endorse Harris — despite the fact that he readily endorsed Biden just months earlier. “This is about Montana. It’s about making sure we have a Montanan back in Washington D.C., representing Montana values.”