HARRISBURG (AP) – Lancaster County Sen. Scott Martin says he’s forming an exploratory committee to run for the Republican nomination for governor in 2022. Martin joined a crowded field of declared and prospective candidates. Forming an exploratory committee helps him raise money for a campaign. Already declared is Republican Lou Barletta, the former four-term congressman. Democrats are rallying around state Attorney General Josh Shapiro, who has said he expects to run for governor, but has yet to formally announce his candidacy.