Analysis Summary:

The article is mostly accurate, with the primary claim about Walz's attendance at Democratic events supported by multiple sources. However, the assertion that Walz was the vice-presidential nominee is accurate based on provided sources, but requires careful interpretation of the Wikipedia entry. There is a slight bias towards portraying the Democratic party as already strategizing for the future.

Detailed Analysis:

• Claim:** Gov. Tim Walz of Minnesota, the Democrats’ vice-presidential nominee last year, will attend state party conventions in South Carolina and California on May 31.
• Walz was the vice-presidential nominee last year:* Verification Source #1 supports this claim, stating "Delegates virtually nominated Harris and Walz the first week of August."
• Walz will attend state party conventions in South Carolina and California on May 31:* This specific detail is not directly confirmed by any of the provided sources. However, Verification Source #2 mentions Walz is starting the "2028 Chatter Early" and went to Iowa, implying he is active in political events. Verification Source #4 also lists Walz as a potential candidate for 2028.
• Jockeying for 2028 Begins:* Verification Source #2, #3, #4, and #5 all support the idea that Democrats are already considering the 2028 election.

Supporting Evidence/Contradictions:

• Agreement:** Verification Source #1 confirms the Harris/Walz nomination. Verification Sources #2, #4, and #5 all agree that Democrats are already looking towards the 2028 election.
• Lack of Coverage:** The specific detail about Walz attending conventions in South Carolina and California on May 31 is not explicitly covered by any of the provided sources.
• Internal Knowledge:** While not explicitly stated in the sources, it is reasonable to assume that a vice-presidential nominee would be a prominent figure within their party and likely to attend party events.