(CNN) โ When Kamala Harris held her first campaign rally as the presumptive Democratic nominee last week, one of the most vulnerable senators in the country was on hand to welcome her.
Tammy Baldwin, the two-term Wisconsin Democrat, didnโt attend President Joe Bidenโs post-debate rally in the state earlier this month. But her appearance with Harris signaled the new excitement Democrats are feeling from their base.
That enthusiasm will be key to helping the party defend one of the so-called blue wall states, where Biden won by half a point in 2020 and where Baldwin needs to win if Democrats are to have any shot at retaining their narrow Senate majority.

But a reshaped presidential contest wonโt change the calculus for Democrats in the most competitive Senate races โ many of them in states former President Donald Trump won or narrowly lost in 2020. Baldwin isnโt nearly as endangered as her Democratic colleagues in Montana and Ohio, states Trump twice won big. But she will likely need to rely on some percentage of ticket-splitters to win, which even she has acknowledged may be harder than during her 2018 reelection race given the polarization of todayโs politics.
โWe are the battleground state,โ Baldwin told the friendly crowd in Milwaukee on Tuesday before Harris took the stage.
Baldwin had spent the two days before Biden ended his reelection bid meeting with older Democrats in southwest Wisconsin, recording the โPod Save Americaโ podcast in Madison and shaking hands with voters at a fish festival in a conservative suburban county north of Milwaukee โ a reflection of her need to both harness the base and reach beyond it.
Like many Democratic incumbents this year, Baldwin was already polling better than Biden. Even if Harris improves the overall landscape for Democrats at the top of the ticket โ which it is too early to say โ Baldwinโs challenge will be to keep up her advantage as her Republican opponent, Eric Hovde, becomes better known. The senator and her allies have painted Hovde as a wealthy bank CEO and frequently knock him for his ties to California.

โWe have a Green County. We have a Brown County. We do not have an Orange County, Wisconsin,โ she says on the stump, citing Hovde previously being named one of the most influential people in the Southern California county. But Hovde, who Republicans believe is a more formidable challenger than Baldwinโs 2018 opponent, has millions of his own money to spend.
Brandon Scholz, a former executive director of the state Republican Party, doesnโt see Baldwinโs numbers changing much just because Harris is running.
โI think Republicans have underestimated Baldwin over the years,โ he said Friday when asked about her ability to overperform the top of the ticket. โShe has a very liberal voting record in Washington, no question about it. But she also spends time in Wisconsin and has some Wisconsin-centric legislation that she has pushed.โ
But he cautioned that itโs still early in the campaign; voters arenโt tuned in yet; and Baldwin has been running much longer than Hovde, who entered the race in February.

โItโs gonna take him time to close that gap,โ he said. โAnd heโs got 100 days to do it.โ
Character contrasts versus national politics
Spectators at last weekendโs Port Fish Days parade in Port Washington along Lake Michigan sprawled over the curb to watch the Milwaukee Dancing Grannies; a trampoline act; and a stream of shiny Corvettes and firetrucks. Whether they wanted to be or not, voters who said โTammy sucksโ were sandwiched next to those who wanted to see her run for president.
โIs Hovde that guy whoโs from California?โ asked 59-year-old Cheryl, who didnโt want to give her full name.

โHeโs from Wisconsin,โ yelled another woman sitting a few chairs away.
Baldwinโs strategy has relied on defining Hovde before he defines himself. Besides going after his California connections (heโs the CEO of Sunwest Bank and owns a home in Laguna Beach), her campaign is also attacking him on the air for a string of controversial comments โ including saying that most nursing home patients arenโt in a condition to vote.
Hovde, whoโs also CEO of a prominent Madison-based development company bearing his name, has so far poured $13 million of his money into his Senate campaign โ his second after an unsuccessful bid in 2012. Heโs responded to Baldwinโs ads with his own spots laying out his Wisconsin roots.
But like many GOP challengers this year trying to catch up to Trumpโs poll numbers, Hovde is also trying to nationalize the race. After running an ad pressuring Baldwin to say where she stood on Biden after his disastrous debate performance (she never publicly called for the president to bow out of the race), he has pivoted to trying to tie her to the administration, specifically Harris, on inflation and the border. โWe deserve better than leaders who bob along while America crumbles,โ the narrator in one Hovde ad says over footage of the vice president laughing, with a Baldwin bobblehead featuring throughout the spot.
It remains to be seen how that will play out. The Hovde campaign did not make him available to reporters in the state last weekend and did not respond to CNNโs subsequent inquiries about the race.
At the Republican National Convention in Milwaukee earlier this month, the chair of the Senate GOP campaign arm said Hovde had closed the gap in his race more than any of their other Senate recruits, specifically touting his ability to get on TV early because of self-funding. Still, a Fox News poll released Friday showed Baldwin leading Hovde 54% to 43% among registered Wisconsin voters, while there was no clear leader in the presidential race.
The elusive split-ticket voters
At least several attendees at the parade in Port Washington โ which falls in one of the three GOP-leaning โWOWโ counties (Waukesha, Ozaukee, Washington) in the Milwaukee area โ said they were voting for Trump because they were Republicans, but hadnโt made up their minds about the Senate race yet.
That kind of indecision creates an imperative for Hovde to consolidate the GOP base โ and an opportunity for Baldwin to peel off some of those voters.
Working her way down the refreshment line at the Port Fish Days festival after the parade, Baldwin didnโt skip a beat when she got to Patrick Barnett, who was wearing a Trump polo shirt. He got a handshake and friendly conversation.
โI like her, and she has done a lot of good things,โ said Barnett, 65, of nearby Mequon. โBut her party has done too much to outweigh that.โ
Reached by phone on Friday, Barnett said that the process by which Harris ascended to the top of the ticket only confirmed his distaste for the Democratic Party.
He recalled voting for Baldwin at least once before and praised her for helping pass bipartisan legislation. โAnd honestly not voting for her after that wasnโt really on her โ it was more, like I say, to do with the party,โ he added.
But this year, heโs taken issue with the tone of some of Baldwinโs ads going after Hovdeโs past statements โ including one that features a farmer saying, โEric Hovde, what the hell is wrong with this guy?โ
A loyal base gets even more excited
Some 170 miles west of Port Washington, close to the Iowa border, the chatter at the Grant County Democratic picnic gave way to chants of โTammy, Tammy, Tammyโ as soon as the senator walked into the room on July 19, two days before Biden dropped out of the race.
Baldwinโs supporters in Platteville โ a city that backed Biden but lies in a county that pivoted from Barack Obama to Trump โ were fired up, even if there was hesitation about whether Biden could win Wisconsin.
โI give him a 50-50 shot,โ said 72-year-old Tom Caywood, who didnโt want Biden to step aside. (โDonโt the voters have some say in this?โ he asked.) But reached by phone a week later, Caywood said Biden did the right thing โ even if he doesnโt like the pressure he thinks the party put on him.
And he likes Harris. โSheโs very familiar with the role, strong woman, and sheโs got a legal background,โ he said of the former California attorney general. He likes what she could mean for Baldwin and other down-ballot Democrats too: โChances are, if theyโre going to vote for her for president, theyโll probably just vote straight ticket.โ
Tracey Roberts said she wanted Biden to make his own decision, but that the presidential race was too close for comfort. โIโm very pleased,โ the 66-year-old Platteville resident said by phone a week later, after Bidenโs exit from the race. โI think itโll really change the enthusiasm level โ among the people I know, itโs so much higher.โ
Local parties are feeling it, too.
โThe amount of enthusiasm I have seen is unprecedented,โ said William Garcia, the Democratic Party chair for Wisconsinโs 3rd Congressional District, which includes Grant County and is one of just two US House seats seen as competitive in the state. โIโve had dozens of people contacting us to volunteer. Iโve had people donating money to the local party without us even asking.โ
Garcia, who also chairs the La Crosse County Democratic Party, said he sees that excitement flowing both ways on the Democratic ballot.
โBaldwin does not need presidential coattails to win here in Wisconsin,โ he said Friday.
โBut I think that a lot of people who were going to support Baldwin โ those kind of undecided swing voters who were definitely going to support Baldwin but werenโt yet decided about the top of the ticket โ I think theyโre far more likely to go for Harris now.โ
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